diff --git a/offloading_binaries/client_send_normaltcp_splice/client_send_normaltcp_splice b/offloading_binaries/client_send_normaltcp_splice/client_send_normaltcp_splice index 178692c..72e6578 100755 Binary files a/offloading_binaries/client_send_normaltcp_splice/client_send_normaltcp_splice and b/offloading_binaries/client_send_normaltcp_splice/client_send_normaltcp_splice differ diff --git a/offloading_binaries/client_send_normaltcp_splice/main.c b/offloading_binaries/client_send_normaltcp_splice/main.c index 84eb0ee..55a49c7 100644 --- a/offloading_binaries/client_send_normaltcp_splice/main.c +++ b/offloading_binaries/client_send_normaltcp_splice/main.c @@ -48,7 +48,7 @@ int main(int argc, char *argv[]) uint quota = 1000000000; // default bytes per slot, default 1GB/slot uint sentInSlot = 0, slot = 1; uint total_bytes_sent = 0; - uint bytes, bytes_sent, bytes_in_pipe; + int bytes, bytes_sent, bytes_in_pipe; // for timing double elapsedTime; struct timeval t_start, t_end, t_now; diff --git a/offloading_binaries/client_send_normaltcp_splice/main.o b/offloading_binaries/client_send_normaltcp_splice/main.o index 81cb71c..80590c6 100644 Binary files a/offloading_binaries/client_send_normaltcp_splice/main.o and b/offloading_binaries/client_send_normaltcp_splice/main.o differ diff --git a/offloading_binaries/client_send_normaludp_sendfile/Makefile b/offloading_binaries/client_send_normaludp_sendfile/Makefile new file mode 100644 index 0000000..accb944 --- /dev/null +++ b/offloading_binaries/client_send_normaludp_sendfile/Makefile @@ -0,0 +1,18 @@ +#CC = /media/Lucifer/android/lib/android-18-toolchain/bin/arm-linux-androideabi-gcc +CC1 = arm-linux-androideabi-gcc +CC2 = gcc +CFLAGS = -pie -fPIE +TARGET1 = client_send_normaludp_sendfile +TARGET2 = client_send_normaludp_sendfile_pc + +all: $(TARGET1) $(TARGET2) + +$(TARGET1): main.c + $(CC1) main.c -Wall $(CFLAGS) -o $@ + +$(TARGET2): main.c + $(CC2) main.c -Wall $(CFLAGS) -o $@ + +clean: + -rm -f $(TARGET1) + -rm -f $(TARGET2) diff --git a/offloading_binaries/client_send_normaludp_sendfile/client_send_normaludp_sendfile b/offloading_binaries/client_send_normaludp_sendfile/client_send_normaludp_sendfile new file mode 100755 index 0000000..1d6f1f2 Binary files /dev/null and b/offloading_binaries/client_send_normaludp_sendfile/client_send_normaludp_sendfile differ diff --git a/offloading_binaries/client_send_normaludp_sendfile/client_send_normaludp_sendfile_pc b/offloading_binaries/client_send_normaludp_sendfile/client_send_normaludp_sendfile_pc new file mode 100755 index 0000000..deaecd8 Binary files /dev/null and b/offloading_binaries/client_send_normaludp_sendfile/client_send_normaludp_sendfile_pc differ diff --git a/offloading_binaries/client_send_normaludp_sendfile/main.c b/offloading_binaries/client_send_normaludp_sendfile/main.c new file mode 100644 index 0000000..cfbef47 --- /dev/null +++ b/offloading_binaries/client_send_normaludp_sendfile/main.c @@ -0,0 +1,250 @@ +/* + * Initial commit by Yibo @ Jul. 28, 2015 + * Last update by Yanzi @ Sept. 26, 2016 + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define BUF_SIZ 65536 + +#if !defined SPLICE_F_MORE + # define SPLICE_F_MOVE 1 /* Move pages instead of copying. */ + # define SPLICE_F_NONBLOCK 2 /* Don't block on the pipe splicing + (but we may still block on the fd + we splice from/to). */ + # define SPLICE_F_MORE 4 /* Expect more data. */ + # define SPLICE_F_GIFT 8 /* Pages passed in are a gift. */ +#endif + +char isNumber(char number[]) +{ + int i = 0; + + //checking for negative numbers + if (number[0] == '-') + i = 1; + for (; number[i] != 0; i++) + { + //if (number[i] > '9' || number[i] < '0') + if (!isdigit(number[i])) + return 0; + } + return 1; +} + +int main(int argc, char *argv[]) +{ + // for bandwidth control + uint slotLength = 10000; // in microseconds, for bandwidth control + uint quota = 1000000000; // default bytes per slot, default 1GB/slot + uint sentInSlot = 0, slot = 1; + uint total_bytes_sent = 0; + int bytes, bytes_sent, bytes_in_pipe; + // for timing + double elapsedTime; + struct timeval t_start, t_end, t_now; + // for socket + int fd; // file descriptor of file to send + int sockfd; // socket + // char ifName[IFNAMSIZ]; + // char sendbuf[BUF_SIZ]; + struct sockaddr_in servaddr; + // struct ether_header *eh = (struct ether_header *) sendbuf; + // struct iphdr *iph = (struct iphdr *) (sendbuf + sizeof(struct ether_header)); + // struct sockaddr_ll socket_address; + // for misc + int ret; + int sendsize = 1472; // 1500 MTU - 20 IPv4 - 8 UDP + int bytes2send = 0; + struct stat st; + off_t offset = 0; + // create two pipes + int filedes[2]; + ret = pipe(filedes); + + if (argc < 4) + { + printf("Usage: %s <[optional] bandwidth (bps)> <[optional] sendsize (bytes)>\n", argv[0]); + exit(0); + } + + // set bandwidth + if (argc > 4) + quota = atoi(argv[4]) / 8 / (1000000 / slotLength); + + // set sendsize (if larger than 1472 will do packetization (fragmentation) (is this true??)) + if (argc > 5) + sendsize = atoi(argv[5]); + + // adjust slotLength to address packet size issue in the end + if ((quota % sendsize) > 0) + { + // printf("quota:%d,sendsize:%d,slotLength:%d\n", quota, sendsize, slotLength); + slotLength = (uint)((double)(quota / sendsize + 1) * sendsize / quota * slotLength); + quota = (quota / sendsize + 1) * sendsize; + // printf("quota:%d,sendsize:%d,slotLength:%d\n", quota, sendsize, slotLength); + } + + // get file size (bytes2send) + if (isNumber(argv[1])) + { + // set bytes to send + bytes2send = atoi(argv[1]); + // open file descriptor + fd = open("/data/local/tmp/bigfile", O_RDONLY); + if (fd == -1) + { + fprintf(stderr, "! Unable to open /data/local/tmp/bigfile.\n"); + exit(1); + } + } + else + { + // open file descriptor + fd = open(argv[1], O_RDONLY); + if (fd == -1) + { + fprintf(stderr, "! Unable to open file %s.\n", argv[1]); + exit(1); + } + fstat(fd, &st); + bytes2send = st.st_size; + printf("bytes2send:%d\n", bytes2send); + } + + // bind socket + sockfd = socket(AF_INET, SOCK_DGRAM, 0); + bzero(&servaddr, sizeof(servaddr)); + servaddr.sin_family = AF_INET; + servaddr.sin_addr.s_addr = inet_addr(argv[2]); + servaddr.sin_port = htons(atoi(argv[3])); + + if(connect(sockfd, (struct sockaddr *) &servaddr, sizeof(servaddr)) < 0) { + perror("connect failed\n"); + exit(-1); + } + + // start timing + gettimeofday(&t_start, NULL); + + // start to send + while (total_bytes_sent < bytes2send) + { + if ((bytes2send - total_bytes_sent) < quota) + { + quota = bytes2send - total_bytes_sent; + } + // initialize ret + // ret = 1; + // send in slots + while (sentInSlot < quota) + { + // printf( + // "before: total_bytes_sent %d, sentInSlot %d, quota - sentInSlot %d\n", + // total_bytes_sent, sentInSlot, quota - sentInSlot); + ret = sendfile(sockfd, fd, &offset, + ((quota - sentInSlot < sendsize) ? (quota - sentInSlot) : sendsize)); + + // // Splice the data from in_fd into the pipe + // if ((bytes_sent = splice(fd, NULL, filedes[1], NULL, + // (quota - sentInSlot < sendsize) ? (quota - sentInSlot) : sendsize, + // SPLICE_F_MORE | SPLICE_F_MOVE)) <= 0) { + // if (errno == EINTR || errno == EAGAIN) { + // // Interrupted system call/try again + // // Just skip to the top of the loop and try again + // usleep(100); + // continue; + // } + // fprintf(stderr, "! splice error, errno: %d.\n", errno); + // exit(1); + // } + + // // Splice the data from the pipe into out_fd + // bytes_in_pipe = bytes_sent; + // printf("bytes_in_pipe %d, err:%d\n", (int)bytes_sent, errno); + // while (bytes_in_pipe > 0) { + + // if ((bytes = splice(filedes[0], NULL, sockfd, NULL, bytes_in_pipe, + // SPLICE_F_MORE | SPLICE_F_MOVE)) <= 0) { + // if (errno == EINTR || errno == EAGAIN || errno == EMSGSIZE) { + // // Interrupted system call/try again + // // Just skip to the top of the loop and try again + // fprintf(stderr, "! sleep 100, err:%d.\n", errno); + // usleep(1000); + // continue; + // } + // fprintf(stderr, "! splice error, errno: %d.\n", errno); + // usleep(1000); + // continue; + // } + // bytes_in_pipe -= bytes; + // // printf("bytes_in_pipe %d, value %d, err:%d\n", (int)bytes_in_pipe, (int)bytes, errno); + // } + + // total_bytes_sent += bytes_sent; + // sentInSlot += bytes_sent; + + if (ret <= 0) + { + fprintf(stderr, "! Fail to send: ret:%d, err:%d; wait for 100us..\n", ret, errno); + usleep(100); + // offset -= ((quota - sentInSlot < sendsize) ? (quota - sentInSlot) : sendsize); + continue; + } + sentInSlot += ret; + total_bytes_sent += ret; + // printf( + // "total_bytes_sent %d, sentInSlot %d, quota - sentInSlot %d\n", + // total_bytes_sent, sentInSlot, quota - sentInSlot); + } + // control bandwidth + gettimeofday(&t_now, NULL); + elapsedTime = (t_now.tv_sec - t_start.tv_sec) * 1000000.0 + (t_now.tv_usec - t_start.tv_usec); + if (elapsedTime < slotLength * slot) + { + // printf( + // "sent %d, quota %d, bytes2send %d, usleep %lfus\n", + // total_bytes_sent, quota, bytes2send, slotLength * slot - elapsedTime); + usleep((int)(slotLength * slot - elapsedTime)); + } + sentInSlot = 0; + ++slot; + } + + ret = sendto(sockfd, "=?!\n", 4, 0, (struct sockaddr *)&servaddr, sizeof(servaddr)); + if (ret <= 0) + { + fprintf(stderr, "! Unable to end data transfer. errno:%d.\n", errno); + close(sockfd); + close(fd); + exit(1); + } + + // end timing + gettimeofday(&t_end, NULL); + elapsedTime = (t_end.tv_sec - t_start.tv_sec) + (t_end.tv_usec - t_start.tv_usec) / 1000000.0; + printf( + "sent(bytes):%d\nduration(s):%lf\nthroughput(bps):%lf\n", + total_bytes_sent, elapsedTime, total_bytes_sent * 8 / elapsedTime); + + close(sockfd); + close(fd); + + return 0; +} diff --git a/offloading_binaries/client_send_normaludp_sendfile/main.o b/offloading_binaries/client_send_normaludp_sendfile/main.o new file mode 100644 index 0000000..4e9e85d Binary files /dev/null and b/offloading_binaries/client_send_normaludp_sendfile/main.o differ diff --git a/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/Makefile b/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/Makefile new file mode 100644 index 0000000..7d11547 --- /dev/null +++ b/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/Makefile @@ -0,0 +1,18 @@ +#CC = /media/Lucifer/android/lib/android-18-toolchain/bin/arm-linux-androideabi-gcc +CC1 = arm-linux-androideabi-gcc +CC2 = gcc +CFLAGS = -pie -fPIE +TARGET1 = client_send_bypassl3_sendfile +TARGET2 = client_send_bypassl3_sendfile_pc + +all: $(TARGET1) $(TARGET2) + +$(TARGET1): main.c + $(CC1) main.c -Wall $(CFLAGS) -o $@ + +$(TARGET2): main.c + $(CC2) main.c -Wall $(CFLAGS) -o $@ + +clean: + -rm -f $(TARGET1) + -rm -f $(TARGET2) diff --git a/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/client_send_bypassl3_sendfile b/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/client_send_bypassl3_sendfile new file mode 100755 index 0000000..f2a674e Binary files /dev/null and b/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/client_send_bypassl3_sendfile differ diff --git a/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/client_send_bypassl3_sendfile_pc b/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/client_send_bypassl3_sendfile_pc new file mode 100755 index 0000000..06cf659 Binary files /dev/null and b/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/client_send_bypassl3_sendfile_pc differ diff --git a/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/main.c b/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/main.c new file mode 100644 index 0000000..1a74ba8 --- /dev/null +++ b/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/main.c @@ -0,0 +1,288 @@ +/* + * Initial commit by Yibo @ Jul. 28, 2015 + * Last update by Yanzi @ Sept. 26, 2016 + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define ETH_P_IP 0x0800 /* Internet Protocol packet */ +#define ETH_ALEN 6 /* from */ +#define ETH_P_ALL 0x0003 + +#define MY_DEST_MAC0 0x18 +#define MY_DEST_MAC1 0x03 +#define MY_DEST_MAC2 0x73 +#define MY_DEST_MAC3 0xc8 +#define MY_DEST_MAC4 0x86 +#define MY_DEST_MAC5 0x52 + +#define DEFAULT_IF "wlan0" +#define BUF_SIZ 4096 + +char isNumber(char number[]) +{ + int i = 0; + + //checking for negative numbers + if (number[0] == '-') + i = 1; + for (; number[i] != 0; i++) + { + //if (number[i] > '9' || number[i] < '0') + if (!isdigit(number[i])) + return 0; + } + return 1; +} + +int main(int argc, char *argv[]) +{ + // defaults + uint slotLength = 10000; // in microseconds, for bandwidth control + uint quota = 1000000000; // default bytes per slot, default 1GB/slot + uint sentInSlot = 0, slot = 1; + uint total_bytes_sent = 0; + off_t offset = 0; + // for timing + double elapsedTime; + struct timeval t_start, t_end, t_now; + // for socket + int i, j, fd; // file descriptor of file to send + int sockfd; // socket + int tx_len = 0; + char sendbuf[BUF_SIZ]; + struct ifreq if_idx; + struct ifreq if_mac; + struct sockaddr_in servaddr; + struct ether_header *eh = (struct ether_header *) sendbuf; + // struct iphdr *iph = (struct iphdr *) (sendbuf + sizeof(struct ether_header)); + struct sockaddr_ll socket_address; + char ifName[IFNAMSIZ]; + // for misc + int ret; + int sendsize = 1500; // 1500 MTU (raw socket) + int bytes2send = 0; + struct stat st; + unsigned char my_dest_mac[6]; + + if (argc < 3) + { + printf("Usage: %s <[optional] bandwidth (bps)> <[optional] sendsize (bytes)> <[optional] interface>\n", argv[0]); + exit(0); + } + + // set bandwidth + if (argc > 3) + quota = atoi(argv[3]) / 8 / (1000000 / slotLength); + + // set sendsize (if larger than 1460 will do packetization (fragmentation)) + if (argc > 4) + sendsize = atoi(argv[4]); + + // set interface + if (argc > 5) { + strcpy(ifName, argv[5]); + } else { + strcpy(ifName, DEFAULT_IF); + } + + // adjust slotLength to address packet size issue in the end + if ((quota % sendsize) > 0) + { + // printf("quota:%d,sendsize:%d,slotLength:%d\n", quota, sendsize, slotLength); + slotLength = (uint)((double)(quota / sendsize + 1) * sendsize / quota * slotLength); + quota = (quota / sendsize + 1) * sendsize; + // printf("quota:%d,sendsize:%d,slotLength:%d\n", quota, sendsize, slotLength); + } + + // get file size (bytes2send) + if (isNumber(argv[1])) + { + // set bytes to send + bytes2send = atoi(argv[1]); + // open file descriptor + fd = open("/data/local/tmp/bigfile", O_RDONLY); + if (fd == -1) + { + fprintf(stderr, "! Unable to open /data/local/tmp/bigfile.\n"); + exit(1); + } + } + else + { + // open file descriptor + fd = open(argv[1], O_RDONLY); + if (fd == -1) + { + fprintf(stderr, "! Unable to open file %s.\n", argv[1]); + exit(1); + } + fstat(fd, &st); + bytes2send = st.st_size; + printf("bytes2send:%d\n", bytes2send); + } + + if ((sockfd = socket(AF_PACKET, SOCK_RAW, IPPROTO_RAW)) == -1) + { + fprintf(stderr, "! raw socket error.\n"); + exit(1); + } + + // Get the index of the interface to send on + memset(&if_idx, 0, sizeof(struct ifreq)); + strncpy(if_idx.ifr_name, ifName, IFNAMSIZ - 1); + if (ioctl(sockfd, SIOCGIFINDEX, &if_idx) < 0) + { + fprintf(stderr, "! SIOCGIFINDEX error. Check permission.\n"); + exit(1); + } + + // Get the MAC address of the interface to send on + memset(&if_mac, 0, sizeof(struct ifreq)); + strncpy(if_mac.ifr_name, ifName, IFNAMSIZ - 1); + if (ioctl(sockfd, SIOCGIFHWADDR, &if_mac) < 0) + { + fprintf(stderr, "! SIOCGIFHWADDR error. Check permission.\n"); + exit(1); + } + + // Set mem + memset(sendbuf, 0, BUF_SIZ); + + // parse input MAC address + sscanf( + argv[2], "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", + &my_dest_mac[0], &my_dest_mac[1], &my_dest_mac[2], + &my_dest_mac[3], &my_dest_mac[4], &my_dest_mac[5]); + + printf("destMAC:%02x:%02x:%02x:%02x:%02x:%02x\n", + my_dest_mac[0], my_dest_mac[1], my_dest_mac[2], + my_dest_mac[3], my_dest_mac[4], my_dest_mac[5]); + + // Construct the Ethernet header + eh->ether_shost[0] = ((uint8_t *)&if_mac.ifr_hwaddr.sa_data)[0]; + eh->ether_shost[1] = ((uint8_t *)&if_mac.ifr_hwaddr.sa_data)[1]; + eh->ether_shost[2] = ((uint8_t *)&if_mac.ifr_hwaddr.sa_data)[2]; + eh->ether_shost[3] = ((uint8_t *)&if_mac.ifr_hwaddr.sa_data)[3]; + eh->ether_shost[4] = ((uint8_t *)&if_mac.ifr_hwaddr.sa_data)[4]; + eh->ether_shost[5] = ((uint8_t *)&if_mac.ifr_hwaddr.sa_data)[5]; + eh->ether_dhost[0] = my_dest_mac[0]; + eh->ether_dhost[1] = my_dest_mac[1]; + eh->ether_dhost[2] = my_dest_mac[2]; + eh->ether_dhost[3] = my_dest_mac[3]; + eh->ether_dhost[4] = my_dest_mac[4]; + eh->ether_dhost[5] = my_dest_mac[5]; + eh->ether_type = htons(ETH_P_IP); + tx_len += sizeof(struct ether_header); + + // Index of the network device + socket_address.sll_ifindex = if_idx.ifr_ifindex; + + // Address length + socket_address.sll_halen = ETH_ALEN; + + // Destination MAC + socket_address.sll_addr[0] = MY_DEST_MAC0; + socket_address.sll_addr[1] = MY_DEST_MAC1; + socket_address.sll_addr[2] = MY_DEST_MAC2; + socket_address.sll_addr[3] = MY_DEST_MAC3; + socket_address.sll_addr[4] = MY_DEST_MAC4; + socket_address.sll_addr[5] = MY_DEST_MAC5; + + if(bind(sockfd, (struct sockaddr *) &socket_address, sizeof(struct sockaddr_ll)) < 0) { + perror("bind\n"); + exit(-1); + } + + + ret = sendto( + sockfd, sendbuf, sendsize, + MSG_DONTWAIT, (struct sockaddr*)&socket_address, sizeof(struct sockaddr_ll)); + // fprintf(stderr, "! Fail to send: ret:%d, err:%d; wait for 100us..\n", ret, errno); + + + // start timing + gettimeofday(&t_start, NULL); + // read(fd, sendbuf + tx_len, sendsize - tx_len); + + // start to send + while (total_bytes_sent < bytes2send) + { + if ((bytes2send - total_bytes_sent) < quota) + { + quota = bytes2send - total_bytes_sent; + } + // send in slots + while (sentInSlot < quota) + { + // printf( + // "before: total_bytes_sent %d, sentInSlot %d, quota - sentInSlot %d\n", + // total_bytes_sent, sentInSlot, quota - sentInSlot); + + ret = sendfile(sockfd, fd, &offset, + ((quota - sentInSlot < (sendsize - tx_len)) ? (quota - sentInSlot) : (sendsize - tx_len))); + + // read( + // fd, sendbuf + tx_len, + // ( + // ((quota - sentInSlot) < (sendsize - tx_len)) ? + // (quota - sentInSlot) : (sendsize - tx_len)) + // ); + // ret = sendto( + // sockfd, sendbuf, + // (quota - sentInSlot < sendsize) ? (quota - sentInSlot) : sendsize, + // MSG_DONTWAIT, (struct sockaddr*)&socket_address, sizeof(struct sockaddr_ll)); + + if (ret <= 0) + { + fprintf(stderr, "! Fail to send: ret:%d, err:%d; wait for 100us..\n", ret, errno); + usleep(100); + continue; + } + total_bytes_sent += ret; + sentInSlot += ret; + // printf( + // "after: total_bytes_sent %d, sentInSlot %d, quota - sentInSlot %d\n", + // total_bytes_sent, sentInSlot, quota - sentInSlot); + } + // control bandwidth + gettimeofday(&t_now, NULL); + elapsedTime = (t_now.tv_sec - t_start.tv_sec) * 1000000.0 + (t_now.tv_usec - t_start.tv_usec); + if (elapsedTime < (slotLength * slot)) + { + // printf( + // "sent %d, quota %d, bytes2send %d, usleep %lfus\n", + // total_bytes_sent, quota, bytes2send, slotLength * slot - elapsedTime); + usleep((int)(slotLength * slot - elapsedTime)); + } + sentInSlot = 0; + ++slot; + } + + // end timing + gettimeofday(&t_end, NULL); + elapsedTime = (t_end.tv_sec - t_start.tv_sec) + (t_end.tv_usec - t_start.tv_usec) / 1000000.0; + printf( + "sent(bytes):%d\nduration(s):%lf\nthroughput(bps):%lf\n", + total_bytes_sent, elapsedTime, total_bytes_sent * 8 / elapsedTime); + + close(sockfd); + close(fd); + + return 0; +} diff --git a/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/main.o b/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/main.o new file mode 100644 index 0000000..4e9e85d Binary files /dev/null and b/offloading_binaries/old/client_send_bypassl3_sendfile_DNW/main.o differ diff --git a/offloading_binaries/old/test_splice/a.out b/offloading_binaries/old/test_splice/a.out new file mode 100755 index 0000000..e96fd15 Binary files /dev/null and b/offloading_binaries/old/test_splice/a.out differ diff --git a/offloading_binaries/old/test_splice/test_splice.c b/offloading_binaries/old/test_splice/test_splice.c new file mode 100644 index 0000000..d11e389 --- /dev/null +++ b/offloading_binaries/old/test_splice/test_splice.c @@ -0,0 +1,113 @@ +/* + * Copyright (C) 2009 Max Kellermann + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the + * distribution. + */ + +/* + * This tiny program prints a matrix: which file descriptor + * combinations are supported by splice()? + */ + +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include + +static struct { + const char *const name; + int in, out; +} fds[] = { + { .name = "pipe", }, + { .name = "reg", }, + { .name = "chr", }, + { .name = "unix", }, + { .name = "tcp", }, + { .name = "udp", }, +}; + +enum { + NUM_FDS = sizeof(fds) / sizeof(fds[0]), +}; + +int main(int argc, char **argv) +{ + int f[2], ret; + unsigned x, y; + char template1[] = "/tmp/test_splice.XXXXXX"; + char template2[] = "/tmp/test_splice.XXXXXX"; + + (void)argc; + (void)argv; + + /* open two file descriptors of each kind */ + + fds[0].in = pipe(f) >= 0 ? f[0] : -1; + fds[0].out = pipe(f) >= 0 ? f[1] : -1; + fds[1].in = mkstemp(template1); + fds[1].out = mkstemp(template2); + fds[2].in = open("/dev/zero", O_RDONLY); + fds[2].out = open("/dev/null", O_WRONLY); + fds[3].in = socketpair(AF_UNIX, SOCK_STREAM, 0, f) >= 0 ? f[0] : -1; + fds[3].out = socketpair(AF_UNIX, SOCK_STREAM, 0, f) >= 0 ? f[0] : -1; + fds[4].in = socket(AF_INET, SOCK_STREAM, 0); + fds[4].out = socket(AF_INET, SOCK_STREAM, 0); + fds[5].in = socket(AF_INET, SOCK_DGRAM, 0); + fds[5].out = socket(AF_INET, SOCK_DGRAM, 0); + + /* print table header */ + + printf("in\\out"); + for (x = 0; x < NUM_FDS; ++x) + printf("\t%s", fds[x].name); + putchar('\n'); + + for (y = 0; y < NUM_FDS; ++y) { + fputs(fds[y].name, stdout); + + for (x = 0; x < NUM_FDS; ++x) { + putchar('\t'); + + if (fds[x].out < 0 || fds[y].in < 0) { + fputs("n/a", stdout); + continue; + } + + ret = splice(fds[y].in, NULL, fds[x].out, NULL, 1, + SPLICE_F_NONBLOCK); + if (ret >= 0 || errno == EAGAIN || errno == EWOULDBLOCK + || errno == ENOTCONN) + /* EAGAIN or EWOULDBLOCK means that the kernel has + accepted this combination, but can't move pages + right now */ + fputs("yes", stdout); + else if (errno == EINVAL) + /* the kernel doesn't support this combination */ + fputs("no", stdout); + else if (errno == ENOSYS) + /* splice() isn't supported at all */ + fputs("ENOSYS", stdout); + else + /* an unexpected error code */ + fputs("err", stdout); + } + + putchar('\n'); + } + + unlink(template1); + unlink(template2); +}