Author: hselasky Date: Mon Apr 13 09:02:17 2020 New Revision: 359855 URL: https://svnweb.freebsd.org/changeset/base/359855
Log: MFC r359653: Count number of times transmit ring is out of buffers in mlx5en(4). Differential Revision: https://reviews.freebsd.org/D24273 Sponsored by: Mellanox Technologies Modified: stable/10/sys/dev/mlx5/mlx5_en/en.h stable/10/sys/dev/mlx5/mlx5_en/mlx5_en_tx.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/dev/mlx5/mlx5_en/en.h ============================================================================== --- stable/10/sys/dev/mlx5/mlx5_en/en.h Mon Apr 13 09:01:46 2020 (r359854) +++ stable/10/sys/dev/mlx5/mlx5_en/en.h Mon Apr 13 09:02:17 2020 (r359855) @@ -355,6 +355,7 @@ struct mlx5e_rq_stats { m(+1, u64 csum_offload_none, "csum_offload_none", "Transmitted packets") \ m(+1, u64 defragged, "defragged", "Transmitted packets") \ m(+1, u64 dropped, "dropped", "Transmitted packets") \ + m(+1, u64 enobuf, "enobuf", "Transmitted packets") \ m(+1, u64 nop, "nop", "Transmitted packets") #define MLX5E_SQ_STATS_NUM (0 MLX5E_SQ_STATS(MLX5E_STATS_COUNT)) Modified: stable/10/sys/dev/mlx5/mlx5_en/mlx5_en_tx.c ============================================================================== --- stable/10/sys/dev/mlx5/mlx5_en/mlx5_en_tx.c Mon Apr 13 09:01:46 2020 (r359854) +++ stable/10/sys/dev/mlx5/mlx5_en/mlx5_en_tx.c Mon Apr 13 09:02:17 2020 (r359855) @@ -255,6 +255,7 @@ mlx5e_sq_xmit(struct mlx5e_sq *sq, struct mbuf **mbp) * of the mbuf into the drbr (see mlx5e_xmit_locked) */ if (unlikely(!mlx5e_sq_has_room_for(sq, 2 * MLX5_SEND_WQE_MAX_WQEBBS))) { + sq->stats.enobuf++; return (ENOBUFS); } @@ -264,8 +265,10 @@ mlx5e_sq_xmit(struct mlx5e_sq *sq, struct mbuf **mbp) /* Send one multi NOP message instead of many */ mlx5e_send_nop(sq, (pi + 1) * MLX5_SEND_WQEBB_NUM_DS); pi = ((~sq->pc) & sq->wq.sz_m1); - if (pi < (MLX5_SEND_WQE_MAX_WQEBBS - 1)) + if (pi < (MLX5_SEND_WQE_MAX_WQEBBS - 1)) { + sq->stats.enobuf++; return (ENOMEM); + } } /* Setup local variables */ _______________________________________________ svn-src-stable-10@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-stable-10 To unsubscribe, send any mail to "svn-src-stable-10-unsubscr...@freebsd.org"
