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sfxge: Add statistics for partially dropped TSO packets

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Sponsored by:   Solarflare Communications, Inc.
Approved by:    gnn (mentor)
This commit is contained in:
Andrew Rybchenko 2015-02-05 12:10:23 +00:00
parent 0f999687bb
commit e1a3d10e9e
2 changed files with 10 additions and 2 deletions
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10
sys/dev/sfxge/sfxge_tx.c
View File

@ -1094,12 +1094,16 @@ sfxge_tx_queue_tso(struct sfxge_txq *txq, struct mbuf *mbuf,
* 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),

2
sys/dev/sfxge/sfxge_tx.h
View File

@ -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