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bpf: tcp: Use sock_gen_put instead of sock_put in bpf_iter_tcp 

While reviewing the udp-iter batching patches, noticed the bpf_iter_tcp
calling sock_put() is incorrect. It should call sock_gen_put instead
because bpf_iter_tcp is iterating the ehash table which has the req sk
and tw sk. This patch replaces all sock_put with sock_gen_put in the
bpf_iter_tcp codepath.

Fixes: 04c7820b77 ("bpf: tcp: Bpf iter batching and lock_sock")
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20230328004232.2134233-1-martin.lau@linux.dev
This commit is contained in:
Martin KaFai Lau 2023-03-27 17:42:32 -07:00 committed by Daniel Borkmann
parent 45977e58ce
commit 580031ff99
1 changed files with 2 additions and 2 deletions
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4
net/ipv4/tcp_ipv4.c
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@ -2780,7 +2780,7 @@ static int tcp_prog_seq_show(struct bpf_prog *prog, struct bpf_iter_meta *meta,
static void bpf_iter_tcp_put_batch(struct bpf_tcp_iter_state *iter)
{
while (iter->cur_sk < iter->end_sk)
sock_put(iter->batch[iter->cur_sk++]);
sock_gen_put(iter->batch[iter->cur_sk++]);
}
static int bpf_iter_tcp_realloc_batch(struct bpf_tcp_iter_state *iter,
@ -2941,7 +2941,7 @@ static void *bpf_iter_tcp_seq_next(struct seq_file *seq, void *v, loff_t *pos)
* st->bucket. See tcp_seek_last_pos().
*/
st->offset++;
sock_put(iter->batch[iter->cur_sk++]);
sock_gen_put(iter->batch[iter->cur_sk++]);
}
if (iter->cur_sk < iter->end_sk)