6.12-stable review patch. If anyone has any objections, please let me know.
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From: Stanislav Fomichev sdf@fomichev.me
[ Upstream commit 6891f0b523e1ef452523ba43d67ca2a654760e78 ]
That should make it possible to do expected payload validation on the caller side.
Reviewed-by: Mina Almasry almasrymina@google.com Reviewed-by: Joe Damato jdamato@fastly.com Signed-off-by: Stanislav Fomichev sdf@fomichev.me Link: https://patch.msgid.link/20241107181211.3934153-2-sdf@fomichev.me Signed-off-by: Jakub Kicinski kuba@kernel.org Stable-dep-of: 97c4e094a4b2 ("tests/ncdevmem: Fix double-free of queue array") Signed-off-by: Sasha Levin sashal@kernel.org --- tools/testing/selftests/net/ncdevmem.c | 61 +++++++++++++------------- 1 file changed, 30 insertions(+), 31 deletions(-)
diff --git a/tools/testing/selftests/net/ncdevmem.c b/tools/testing/selftests/net/ncdevmem.c index 64d6805381c50..9245d3f158dd3 100644 --- a/tools/testing/selftests/net/ncdevmem.c +++ b/tools/testing/selftests/net/ncdevmem.c @@ -88,7 +88,6 @@ void print_nonzero_bytes(void *ptr, size_t size)
for (i = 0; i < size; i++) putchar(p[i]); - printf("\n"); }
void validate_buffer(void *line, size_t size) @@ -120,7 +119,7 @@ void validate_buffer(void *line, size_t size) char command[256]; \ memset(command, 0, sizeof(command)); \ snprintf(command, sizeof(command), cmd, ##__VA_ARGS__); \ - printf("Running: %s\n", command); \ + fprintf(stderr, "Running: %s\n", command); \ system(command); \ })
@@ -128,22 +127,22 @@ static int reset_flow_steering(void) { int ret = 0;
- ret = run_command("sudo ethtool -K %s ntuple off", ifname); + ret = run_command("sudo ethtool -K %s ntuple off >&2", ifname); if (ret) return ret;
- return run_command("sudo ethtool -K %s ntuple on", ifname); + return run_command("sudo ethtool -K %s ntuple on >&2", ifname); }
static int configure_headersplit(bool on) { - return run_command("sudo ethtool -G %s tcp-data-split %s", ifname, + return run_command("sudo ethtool -G %s tcp-data-split %s >&2", ifname, on ? "on" : "off"); }
static int configure_rss(void) { - return run_command("sudo ethtool -X %s equal %d", ifname, start_queue); + return run_command("sudo ethtool -X %s equal %d >&2", ifname, start_queue); }
static int configure_channels(unsigned int rx, unsigned int tx) @@ -153,7 +152,7 @@ static int configure_channels(unsigned int rx, unsigned int tx)
static int configure_flow_steering(void) { - return run_command("sudo ethtool -N %s flow-type tcp4 src-ip %s dst-ip %s src-port %s dst-port %s queue %d", + return run_command("sudo ethtool -N %s flow-type tcp4 src-ip %s dst-ip %s src-port %s dst-port %s queue %d >&2", ifname, client_ip, server_ip, port, port, start_queue); }
@@ -187,7 +186,7 @@ static int bind_rx_queue(unsigned int ifindex, unsigned int dmabuf_fd, goto err_close; }
- printf("got dmabuf id=%d\n", rsp->id); + fprintf(stderr, "got dmabuf id=%d\n", rsp->id); dmabuf_id = rsp->id;
netdev_bind_rx_req_free(req); @@ -314,8 +313,8 @@ int do_server(void) if (ret) error(errno, errno, "%s: [FAIL, set sock opt]\n", TEST_PREFIX);
- printf("binding to address %s:%d\n", server_ip, - ntohs(server_sin.sin_port)); + fprintf(stderr, "binding to address %s:%d\n", server_ip, + ntohs(server_sin.sin_port));
ret = bind(socket_fd, &server_sin, sizeof(server_sin)); if (ret) @@ -329,14 +328,14 @@ int do_server(void)
inet_ntop(server_sin.sin_family, &server_sin.sin_addr, buffer, sizeof(buffer)); - printf("Waiting or connection on %s:%d\n", buffer, - ntohs(server_sin.sin_port)); + fprintf(stderr, "Waiting or connection on %s:%d\n", buffer, + ntohs(server_sin.sin_port)); client_fd = accept(socket_fd, &client_addr, &client_addr_len);
inet_ntop(client_addr.sin_family, &client_addr.sin_addr, buffer, sizeof(buffer)); - printf("Got connection from %s:%d\n", buffer, - ntohs(client_addr.sin_port)); + fprintf(stderr, "Got connection from %s:%d\n", buffer, + ntohs(client_addr.sin_port));
while (1) { struct iovec iov = { .iov_base = iobuf, @@ -349,14 +348,13 @@ int do_server(void) ssize_t ret;
is_devmem = false; - printf("\n\n");
msg.msg_iov = &iov; msg.msg_iovlen = 1; msg.msg_control = ctrl_data; msg.msg_controllen = sizeof(ctrl_data); ret = recvmsg(client_fd, &msg, MSG_SOCK_DEVMEM); - printf("recvmsg ret=%ld\n", ret); + fprintf(stderr, "recvmsg ret=%ld\n", ret); if (ret < 0 && (errno == EAGAIN || errno == EWOULDBLOCK)) continue; if (ret < 0) { @@ -364,7 +362,7 @@ int do_server(void) continue; } if (ret == 0) { - printf("client exited\n"); + fprintf(stderr, "client exited\n"); goto cleanup; }
@@ -373,7 +371,7 @@ int do_server(void) if (cm->cmsg_level != SOL_SOCKET || (cm->cmsg_type != SCM_DEVMEM_DMABUF && cm->cmsg_type != SCM_DEVMEM_LINEAR)) { - fprintf(stdout, "skipping non-devmem cmsg\n"); + fprintf(stderr, "skipping non-devmem cmsg\n"); continue; }
@@ -384,7 +382,7 @@ int do_server(void) /* TODO: process data copied from skb's linear * buffer. */ - fprintf(stdout, + fprintf(stderr, "SCM_DEVMEM_LINEAR. dmabuf_cmsg->frag_size=%u\n", dmabuf_cmsg->frag_size);
@@ -395,12 +393,13 @@ int do_server(void) token.token_count = 1;
total_received += dmabuf_cmsg->frag_size; - printf("received frag_page=%llu, in_page_offset=%llu, frag_offset=%llu, frag_size=%u, token=%u, total_received=%lu, dmabuf_id=%u\n", - dmabuf_cmsg->frag_offset >> PAGE_SHIFT, - dmabuf_cmsg->frag_offset % getpagesize(), - dmabuf_cmsg->frag_offset, dmabuf_cmsg->frag_size, - dmabuf_cmsg->frag_token, total_received, - dmabuf_cmsg->dmabuf_id); + fprintf(stderr, + "received frag_page=%llu, in_page_offset=%llu, frag_offset=%llu, frag_size=%u, token=%u, total_received=%lu, dmabuf_id=%u\n", + dmabuf_cmsg->frag_offset >> PAGE_SHIFT, + dmabuf_cmsg->frag_offset % getpagesize(), + dmabuf_cmsg->frag_offset, + dmabuf_cmsg->frag_size, dmabuf_cmsg->frag_token, + total_received, dmabuf_cmsg->dmabuf_id);
if (dmabuf_cmsg->dmabuf_id != dmabuf_id) error(1, 0, @@ -438,15 +437,15 @@ int do_server(void) if (!is_devmem) error(1, 0, "flow steering error\n");
- printf("total_received=%lu\n", total_received); + fprintf(stderr, "total_received=%lu\n", total_received); }
- fprintf(stdout, "%s: ok\n", TEST_PREFIX); + fprintf(stderr, "%s: ok\n", TEST_PREFIX);
- fprintf(stdout, "page_aligned_frags=%lu, non_page_aligned_frags=%lu\n", + fprintf(stderr, "page_aligned_frags=%lu, non_page_aligned_frags=%lu\n", page_aligned_frags, non_page_aligned_frags);
- fprintf(stdout, "page_aligned_frags=%lu, non_page_aligned_frags=%lu\n", + fprintf(stderr, "page_aligned_frags=%lu, non_page_aligned_frags=%lu\n", page_aligned_frags, non_page_aligned_frags);
cleanup: @@ -551,7 +550,7 @@ int main(int argc, char *argv[]) ifname = optarg; break; case '?': - printf("unknown option: %c\n", optopt); + fprintf(stderr, "unknown option: %c\n", optopt); break; } } @@ -559,7 +558,7 @@ int main(int argc, char *argv[]) ifindex = if_nametoindex(ifname);
for (; optind < argc; optind++) - printf("extra arguments: %s\n", argv[optind]); + fprintf(stderr, "extra arguments: %s\n", argv[optind]);
run_devmem_tests();