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Commit e67463cb authored by John Fastabend's avatar John Fastabend Committed by Daniel Borkmann
Browse files

bpf: sockmap sample, add sendfile test 



To exercise TX ULP sendpage implementation we need a test that does
a sendfile. Add sendfile test option here.

Signed-off-by: default avatarJohn Fastabend <john.fastabend@gmail.com>
Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parent 4c4c3c27

samples/sockmap/sockmap_user.c

+60 −10
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include <sys/time.h>

#include <sys/resource.h>

#include <sys/types.h>

#include <sys/sendfile.h>



#include <linux/netlink.h>

#include <linux/socket.h>
@@ -204,6 +205,35 @@ struct msg_stats { 
	struct timespec end;

};



static int msg_loop_sendpage(int fd, int iov_length, int cnt,

			     struct msg_stats *s)

{

	off_t offset = 0;

	FILE *file;

	int i, fp;



	file = fopen(".sendpage_tst.tmp", "w+");

	fseek(file, iov_length * cnt, SEEK_CUR);

	fprintf(file, "A");

	fseek(file, 0, SEEK_SET);



	fp = fileno(file);

	clock_gettime(CLOCK_MONOTONIC, &s->start);

	for (i = 0; i < cnt; i++) {

		int sent = sendfile(fd, fp, &offset, iov_length);



		if (sent < 0) {

			perror("send loop error:");

			fclose(file);

			return sent;

		}

		s->bytes_sent += sent;

	}

	clock_gettime(CLOCK_MONOTONIC, &s->end);

	fclose(file);

	return 0;

}



static int msg_loop(int fd, int iov_count, int iov_length, int cnt,

		    struct msg_stats *s, bool tx)

{
@@ -309,7 +339,7 @@ static inline float recvdBps(struct msg_stats s) 
}



static int sendmsg_test(int iov_count, int iov_buf, int cnt,

			int verbose, bool base)

			int verbose, bool base, bool sendpage)

{

	float sent_Bps = 0, recvd_Bps = 0;

	int rx_fd, txpid, rxpid, err = 0;
@@ -325,6 +355,8 @@ static int sendmsg_test(int iov_count, int iov_buf, int cnt, 


	rxpid = fork();

	if (rxpid == 0) {

		if (sendpage)

			iov_count = 1;

		err = msg_loop(rx_fd, iov_count, iov_buf, cnt, &s, false);

		if (err)

			fprintf(stderr,
@@ -348,7 +380,11 @@ static int sendmsg_test(int iov_count, int iov_buf, int cnt, 


	txpid = fork();

	if (txpid == 0) {

		if (sendpage)

			err = msg_loop_sendpage(c1, iov_buf, cnt, &s);

		else

			err = msg_loop(c1, iov_count, iov_buf, cnt, &s, true);



		if (err)

			fprintf(stderr,

				"msg_loop_tx: iov_count %i iov_buf %i cnt %i err %i\n",
@@ -452,6 +488,8 @@ enum { 
	PING_PONG,

	SENDMSG,

	BASE,

	BASE_SENDPAGE,

	SENDPAGE,

};



int main(int argc, char **argv)
@@ -494,6 +532,10 @@ int main(int argc, char **argv) 
				test = SENDMSG;

			} else if (strcmp(optarg, "base") == 0) {

				test = BASE;

			} else if (strcmp(optarg, "base_sendpage") == 0) {

				test = BASE_SENDPAGE;

			} else if (strcmp(optarg, "sendpage") == 0) {

				test = SENDPAGE;

			} else {

				usage(argv);

				return -1;
@@ -533,7 +575,7 @@ int main(int argc, char **argv) 
	}



	/* If base test skip BPF setup */

	if (test == BASE)

	if (test == BASE || test == BASE_SENDPAGE)

		goto run;



	/* Attach programs to sockmap */
@@ -599,7 +641,7 @@ int main(int argc, char **argv) 
				err, strerror(errno));

			return err;

		}

		if (test == SENDMSG)

		if (txmsg_redir || txmsg_redir_noisy)

			redir_fd = c2;

		else

			redir_fd = c1;
@@ -615,9 +657,17 @@ int main(int argc, char **argv) 
	if (test == PING_PONG)

		err = forever_ping_pong(rate, verbose);

	else if (test == SENDMSG)

		err = sendmsg_test(iov_count, length, rate, verbose, false);

		err = sendmsg_test(iov_count, length, rate,

				   verbose, false, false);

	else if (test == SENDPAGE)

		err = sendmsg_test(iov_count, length, rate,

				   verbose, false, true);

	else if (test == BASE)

		err = sendmsg_test(iov_count, length, rate, verbose, true);

		err = sendmsg_test(iov_count, length, rate,

				   verbose, true, false);

	else if (test == BASE_SENDPAGE)

		err = sendmsg_test(iov_count, length, rate,

				   verbose, true, true);

	else

		fprintf(stderr, "unknown test\n");

out: