diff options
Diffstat (limited to 'src/ipcpd/unicast/pol/ca-mb-ecn.c')
| -rw-r--r-- | src/ipcpd/unicast/pol/ca-mb-ecn.c | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/src/ipcpd/unicast/pol/ca-mb-ecn.c b/src/ipcpd/unicast/pol/ca-mb-ecn.c index 03f7044d..0542e291 100644 --- a/src/ipcpd/unicast/pol/ca-mb-ecn.c +++ b/src/ipcpd/unicast/pol/ca-mb-ecn.c @@ -35,6 +35,7 @@ #include <stdlib.h> #include <string.h> +#include <stdio.h> /* congestion avoidance constants */ #define CA_SHFT 5 /* Average over 32 pkts */ @@ -72,7 +73,8 @@ struct pol_ca_ops mb_ecn_ca_ops = { .ctx_update_rcv = mb_ecn_ctx_update_rcv, .ctx_update_ece = mb_ecn_ctx_update_ece, .wnd_wait = mb_ecn_wnd_wait, - .calc_ecn = mb_ecn_calc_ecn + .calc_ecn = mb_ecn_calc_ecn, + .print_stats = mb_ecn_print_stats }; void * mb_ecn_ctx_create(void) @@ -229,3 +231,40 @@ uint8_t mb_ecn_calc_ecn(int fd, return (uint8_t) (q >> ECN_Q_SHFT); } + +ssize_t mb_ecn_print_stats(void * _ctx, + char * buf, + size_t len) +{ + struct mb_ecn_ctx* ctx = _ctx; + char * regime; + + if (len < 1024) + return 0; + + if (!ctx->tx_cav) + regime = "Slow start"; + else if (ctx->tx_ece) + regime = "Multiplicative dec"; + else + regime = "Additive inc"; + + sprintf(buf, + "Congestion avoidance algorithm: %20s\n" + "Upstream congestion level: %20u\n" + "Upstream packet counter: %20zu\n" + "Downstream congestion level: %20u\n" + "Downstream packet counter: %20zu\n" + "Congestion window size (ns): %20zu\n" + "Packets in this window: %20zu\n" + "Bytes in this window: %20zu\n" + "Max bytes in this window: %20zu\n" + "Current congestion regime: %20s\n", + "Multi-bit ECN", + ctx->rx_ece, ctx->rx_ctr, + ctx->tx_ece, ctx->tx_ctr, (size_t) (1 << ctx->tx_mul), + ctx->tx_wpc, ctx->tx_wbc, ctx->tx_wbl, + regime); + + return strlen(buf); +} |