diff options
| author | David S. Miller | 2017-11-11 15:52:41 +0900 |
|---|---|---|
| committer | David S. Miller | 2017-11-11 15:52:41 +0900 |
| commit | bee955cd3ab4f1a1eb8fc16e7ed69364143df8d7 (patch) | |
| tree | 8e5123160a50193d2b2c5c65fcd7178359353018 /samples/bpf/tcp_bufs_kern.c | |
| parent | 8d6e79d3ce13e34957de87f7584cbf1bcde74c57 (diff) | |
| parent | 03e982eed419da37e9cac1d759097dbe10447190 (diff) | |
Merge branch 'bpf-Fix-bugs-in-sock_ops-samples'
Lawrence Brakmo says:
====================
bpf: Fix bugs in sock_ops samples
The programs were returning -1 in some cases when they should
only return 0 or 1. Changes in the verifier now catch this
issue and the programs fail to load. This is now fixed.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/bpf/tcp_bufs_kern.c')
| -rw-r--r-- | samples/bpf/tcp_bufs_kern.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/samples/bpf/tcp_bufs_kern.c b/samples/bpf/tcp_bufs_kern.c index ee83bbabd17c..0566b7fa38a1 100644 --- a/samples/bpf/tcp_bufs_kern.c +++ b/samples/bpf/tcp_bufs_kern.c @@ -41,8 +41,10 @@ int bpf_bufs(struct bpf_sock_ops *skops) * if neither port numberis 55601 */ if (bpf_ntohl(skops->remote_port) != 55601 && - skops->local_port != 55601) - return -1; + skops->local_port != 55601) { + skops->reply = -1; + return 1; + } op = (int) skops->op; @@ -61,8 +63,8 @@ int bpf_bufs(struct bpf_sock_ops *skops) /* Set sndbuf and rcvbuf of active connections */ rv = bpf_setsockopt(skops, SOL_SOCKET, SO_SNDBUF, &bufsize, sizeof(bufsize)); - rv = rv*100 + bpf_setsockopt(skops, SOL_SOCKET, SO_RCVBUF, - &bufsize, sizeof(bufsize)); + rv += bpf_setsockopt(skops, SOL_SOCKET, SO_RCVBUF, + &bufsize, sizeof(bufsize)); break; case BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB: /* Nothing to do */ @@ -71,8 +73,8 @@ int bpf_bufs(struct bpf_sock_ops *skops) /* Set sndbuf and rcvbuf of passive connections */ rv = bpf_setsockopt(skops, SOL_SOCKET, SO_SNDBUF, &bufsize, sizeof(bufsize)); - rv = rv*100 + bpf_setsockopt(skops, SOL_SOCKET, SO_RCVBUF, - &bufsize, sizeof(bufsize)); + rv += bpf_setsockopt(skops, SOL_SOCKET, SO_RCVBUF, + &bufsize, sizeof(bufsize)); break; default: rv = -1; |