Date: Thu, 5 Feb 2015 12:10:24 +0000 (UTC) From: Andrew Rybchenko <arybchik@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r278255 - head/sys/dev/sfxge Message-ID: <201502051210.t15CAOTL087026@svn.freebsd.org>
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Author: arybchik Date: Thu Feb 5 12:10:23 2015 New Revision: 278255 URL: https://svnweb.freebsd.org/changeset/base/278255 Log: sfxge: Add statistics for partially dropped TSO packets Sponsored by: Solarflare Communications, Inc. Approved by: gnn (mentor) Modified: head/sys/dev/sfxge/sfxge_tx.c head/sys/dev/sfxge/sfxge_tx.h Modified: head/sys/dev/sfxge/sfxge_tx.c ============================================================================== --- head/sys/dev/sfxge/sfxge_tx.c Thu Feb 5 12:08:25 2015 (r278254) +++ head/sys/dev/sfxge/sfxge_tx.c Thu Feb 5 12:10:23 2015 (r278255) @@ -1094,12 +1094,16 @@ sfxge_tx_queue_tso(struct sfxge_txq *txq * roll back the work we have done. */ if (txq->n_pend_desc > - SFXGE_TSO_MAX_DESC - (1 + SFXGE_TX_MAPPING_MAX_SEG)) + SFXGE_TSO_MAX_DESC - (1 + SFXGE_TX_MAPPING_MAX_SEG)) { + txq->tso_pdrop_too_many++; break; + } next_id = (id + 1) & txq->ptr_mask; if (__predict_false(tso_start_new_packet(txq, &tso, - next_id))) + next_id))) { + txq->tso_pdrop_no_rsrc++; break; + } id = next_id; } } @@ -1516,6 +1520,8 @@ static const struct { SFXGE_TX_STAT(tso_bursts, tso_bursts), SFXGE_TX_STAT(tso_packets, tso_packets), SFXGE_TX_STAT(tso_long_headers, tso_long_headers), + SFXGE_TX_STAT(tso_pdrop_too_many, tso_pdrop_too_many), + SFXGE_TX_STAT(tso_pdrop_no_rsrc, tso_pdrop_no_rsrc), SFXGE_TX_STAT(tx_collapses, collapses), SFXGE_TX_STAT(tx_drops, drops), SFXGE_TX_STAT(tx_get_overflow, get_overflow), Modified: head/sys/dev/sfxge/sfxge_tx.h ============================================================================== --- head/sys/dev/sfxge/sfxge_tx.h Thu Feb 5 12:08:25 2015 (r278254) +++ head/sys/dev/sfxge/sfxge_tx.h Thu Feb 5 12:10:23 2015 (r278255) @@ -201,6 +201,8 @@ struct sfxge_txq { unsigned long get_non_tcp_overflow; unsigned long put_overflow; unsigned long netdown_drops; + unsigned long tso_pdrop_too_many; + unsigned long tso_pdrop_no_rsrc; /* The following fields change more often, and are used mostly * on the completion path
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