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rxrpc: Display stats about jumbo packets transmitted and received

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In /proc/net/rxrpc/stats, display statistics about the numbers of different
sizes of jumbo packets transmitted and received, showing counts for 1
subpacket (ie. a non-jumbo packet), 2 subpackets, 3, ... to 8 and then 9+.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
Link: https://patch.msgid.link/20241204074710.990092-22-dhowells@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
David Howells 2024-12-04 07:46:49 +00:00 committed by Jakub Kicinski
parent 203457e11b
commit f003e4038f
4 changed files with 37 additions and 2 deletions
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2
net/rxrpc/ar-internal.h
View File

@ -111,6 +111,8 @@ struct rxrpc_net {
atomic_t stat_tx_ack_skip;
atomic_t stat_tx_acks[256];
atomic_t stat_rx_acks[256];
atomic_t stat_tx_jumbo[10];
atomic_t stat_rx_jumbo[10];
atomic_t stat_why_req_ack[8];

6
net/rxrpc/input.c
View File

@ -568,7 +568,7 @@ static bool rxrpc_input_split_jumbo(struct rxrpc_call *call, struct sk_buff *skb
unsigned int offset = sizeof(struct rxrpc_wire_header);
unsigned int len = skb->len - offset;
bool notify = false;
int ack_reason = 0;
int ack_reason = 0, count = 1, stat_ix;
while (sp->hdr.flags & RXRPC_JUMBO_PACKET) {
if (len < RXRPC_JUMBO_SUBPKTLEN)
@ -597,12 +597,16 @@ static bool rxrpc_input_split_jumbo(struct rxrpc_call *call, struct sk_buff *skb
sp->hdr.serial++;
offset += RXRPC_JUMBO_SUBPKTLEN;
len -= RXRPC_JUMBO_SUBPKTLEN;
count++;
}
sp->offset = offset;
sp->len = len;
rxrpc_input_data_one(call, skb, &notify, &ack_serial, &ack_reason);
stat_ix = umin(count, ARRAY_SIZE(call->rxnet->stat_rx_jumbo)) - 1;
atomic_inc(&call->rxnet->stat_rx_jumbo[stat_ix]);
if (ack_reason > 0) {
rxrpc_send_ACK(call, ack_reason, ack_serial,
rxrpc_propose_ack_input_data);

5
net/rxrpc/output.c
View File

@ -552,10 +552,13 @@ void rxrpc_send_data_packet(struct rxrpc_call *call, struct rxrpc_send_data_req
rxrpc_seq_t seq = req->seq;
size_t len;
bool new_call = test_bit(RXRPC_CALL_BEGAN_RX_TIMER, &call->flags);
int ret;
int ret, stat_ix;
_enter("%x,%x-%x", tq->qbase, seq, seq + req->n - 1);
stat_ix = umin(req->n, ARRAY_SIZE(call->rxnet->stat_tx_jumbo)) - 1;
atomic_inc(&call->rxnet->stat_tx_jumbo[stat_ix]);
len = rxrpc_prepare_data_packet(call, req);
txb = tq->bufs[seq & RXRPC_TXQ_MASK];

26
net/rxrpc/proc.c
View File

@ -529,6 +529,30 @@ int rxrpc_stats_show(struct seq_file *seq, void *v)
atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_retrans]),
atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_slow_start]),
atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_small_txwin]));
seq_printf(seq,
"Jumbo-Tx : %u,%u,%u,%u,%u,%u,%u,%u,%u,%u\n",
atomic_read(&rxnet->stat_tx_jumbo[0]),
atomic_read(&rxnet->stat_tx_jumbo[1]),
atomic_read(&rxnet->stat_tx_jumbo[2]),
atomic_read(&rxnet->stat_tx_jumbo[3]),
atomic_read(&rxnet->stat_tx_jumbo[4]),
atomic_read(&rxnet->stat_tx_jumbo[5]),
atomic_read(&rxnet->stat_tx_jumbo[6]),
atomic_read(&rxnet->stat_tx_jumbo[7]),
atomic_read(&rxnet->stat_tx_jumbo[8]),
atomic_read(&rxnet->stat_tx_jumbo[9]));
seq_printf(seq,
"Jumbo-Rx : %u,%u,%u,%u,%u,%u,%u,%u,%u,%u\n",
atomic_read(&rxnet->stat_rx_jumbo[0]),
atomic_read(&rxnet->stat_rx_jumbo[1]),
atomic_read(&rxnet->stat_rx_jumbo[2]),
atomic_read(&rxnet->stat_rx_jumbo[3]),
atomic_read(&rxnet->stat_rx_jumbo[4]),
atomic_read(&rxnet->stat_rx_jumbo[5]),
atomic_read(&rxnet->stat_rx_jumbo[6]),
atomic_read(&rxnet->stat_rx_jumbo[7]),
atomic_read(&rxnet->stat_rx_jumbo[8]),
atomic_read(&rxnet->stat_rx_jumbo[9]));
seq_printf(seq,
"Buffers : txb=%u rxb=%u\n",
atomic_read(&rxrpc_nr_txbuf),
@ -566,6 +590,8 @@ int rxrpc_stats_clear(struct file *file, char *buf, size_t size)
atomic_set(&rxnet->stat_tx_ack_skip, 0);
memset(&rxnet->stat_tx_acks, 0, sizeof(rxnet->stat_tx_acks));
memset(&rxnet->stat_rx_acks, 0, sizeof(rxnet->stat_rx_acks));
memset(&rxnet->stat_tx_jumbo, 0, sizeof(rxnet->stat_tx_jumbo));
memset(&rxnet->stat_rx_jumbo, 0, sizeof(rxnet->stat_rx_jumbo));
memset(&rxnet->stat_why_req_ack, 0, sizeof(rxnet->stat_why_req_ack));