On Thu, Jul 04, 2024 at 12:39:01PM +0800, zhengguoyong wrote:
> In sockmap redirect mode, when msg send to redir sk,
> we use sk_wrmem_schedule to check memory is enough,
>
> tcp_bpf_sendmsg
> tcp_bpf_send_verdict
> bpf_tcp_ingress
> sk_wmem_schedule
>
> but in bpf_tcp_ingress, the parameter sk means receiver,
> so use sk_rmem_schedule here is more suitability.
>
> Signed-off-by: GuoYong Zheng <zhenggy@xxxxxxxxxxxxxxx>
> ---
> net/ipv4/tcp_bpf.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/net/ipv4/tcp_bpf.c b/net/ipv4/tcp_bpf.c
> index 53b0d62..88c58b5 100644
> --- a/net/ipv4/tcp_bpf.c
> +++ b/net/ipv4/tcp_bpf.c
> @@ -49,7 +49,7 @@ static int bpf_tcp_ingress(struct sock *sk, struct sk_psock *psock,
> sge = sk_msg_elem(msg, i);
> size = (apply && apply_bytes < sge->length) ?
> apply_bytes : sge->length;
> - if (!sk_wmem_schedule(sk, size)) {
> + if (!sk_rmem_schedule(sk, size)) {
> if (!copied)
> ret = -ENOMEM;
> break;
> --
> 1.8.3.1
>
>
