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cansequence: do_receive(): improve output in case of packet miss-match

pull/391/head
Marc Kleine-Budde 2022-12-07 12:50:22 +01:00
parent 1969f943a2
commit 7d375df741
1 changed files with 12 additions and 8 deletions
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20
cansequence.c
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@ -92,7 +92,7 @@ static void do_receive()
unsigned int sequence_wrap = 0; unsigned int sequence_wrap = 0;
uint32_t sequence_mask = 0xff; uint32_t sequence_mask = 0xff;
uint32_t sequence_rx = 0; uint32_t sequence_rx = 0;
uint32_t sequence_delta = 0; uint8_t sequence_delta = 0;
uint32_t sequence = 0; uint32_t sequence = 0;
unsigned int overflow_old = 0; unsigned int overflow_old = 0;
can_err_mask_t err_mask = CAN_ERR_MASK; can_err_mask_t err_mask = CAN_ERR_MASK;
@ -143,7 +143,7 @@ static void do_receive()
sequence = sequence_rx; sequence = sequence_rx;
} }
sequence_delta = (sequence_rx - sequence) & sequence_mask; sequence_delta = sequence_rx - (uint8_t)sequence;
if (sequence_delta) { if (sequence_delta) {
struct cmsghdr *cmsg; struct cmsghdr *cmsg;
uint32_t overflow = 0; uint32_t overflow = 0;
@ -163,12 +163,16 @@ static void do_receive()
overflow_delta = overflow - overflow_old; overflow_delta = overflow - overflow_old;
fprintf(stderr, fprintf(stderr,
"sequence CNT: %6u, RX: %6u expected: %3u missing: %4u skt overfl d: %4u a: %4u delta: %3u incident: %u\n", "sequence CNT: 0x%07x RX: 0x%02x expected: 0x%02x missing: %4u skt overflow delta: %4u absolute: %4u hw - skt: %5d incident: %4u %s%s\n",
sequence, sequence_rx, sequence, sequence_rx, /* CNT, RX */
sequence & sequence_mask, sequence_delta, sequence & sequence_mask, sequence_delta, /* expected, missing */
overflow_delta, overflow, overflow_delta, overflow, /* skb overflow delta, absolute */
sequence_delta - overflow_delta, sequence_delta - overflow_delta, /* hw - skb */
drop_count); drop_count, /* incident */
overflow_delta ? "[SOCKET]" : "",
overflow_delta != sequence_delta ?
((overflow_delta - sequence_delta > 0 && (overflow_delta - sequence_delta) & 0xff) ?
"[HARDWARE]" : "[HARDWARE?]") : "");
if (drop_count == drop_until_quit) if (drop_count == drop_until_quit)
exit(EXIT_FAILURE); exit(EXIT_FAILURE);