From: Arnaldo Carvalho de Melo Date: Mon, 20 Aug 2007 00:16:35 +0000 (-0700) Subject: [DCCP]: Convert dccp_sample_rtt to ktime_t X-Git-Tag: v2.6.24-rc1~1454^2~793 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9823b7b5542858afe5b6a1e2df83b3847c28f3d6;p=linux-2.6 [DCCP]: Convert dccp_sample_rtt to ktime_t Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: David S. Miller --- diff --git a/net/dccp/ccids/ccid3.c b/net/dccp/ccids/ccid3.c index 1a0c5edb7b..3524328db0 100644 --- a/net/dccp/ccids/ccid3.c +++ b/net/dccp/ccids/ccid3.c @@ -414,7 +414,7 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb) struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk); struct ccid3_options_received *opt_recv; struct dccp_tx_hist_entry *packet; - struct timeval now; + ktime_t now, t_hist; unsigned long t_nfb; u32 pinv, r_sample; @@ -452,13 +452,13 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb) else /* can not exceed 100% */ hctx->ccid3hctx_p = 1000000 / pinv; - dccp_timestamp(sk, &now); - + now = ktime_get_real(); + t_hist = timeval_to_ktime(packet->dccphtx_tstamp); /* * Calculate new round trip sample as per [RFC 3448, 4.3] by * R_sample = (now - t_recvdata) - t_elapsed */ - r_sample = dccp_sample_rtt(sk, &now, &packet->dccphtx_tstamp); + r_sample = dccp_sample_rtt(sk, now, &t_hist); /* * Update RTT estimate by @@ -475,7 +475,7 @@ static void ccid3_hc_tx_packet_recv(struct sock *sk, struct sk_buff *skb) */ hctx->ccid3hctx_rtt = r_sample; hctx->ccid3hctx_x = rfc3390_initial_rate(sk); - hctx->ccid3hctx_t_ld = timeval_to_ktime(now); + hctx->ccid3hctx_t_ld = now; ccid3_update_send_interval(hctx); @@ -882,6 +882,7 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb) struct dccp_rx_hist_entry *packet; u32 p_prev, r_sample, rtt_prev; int loss, payload_size; + ktime_t now; BUG_ON(hcrx == NULL); @@ -891,14 +892,12 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb) case DCCP_PKT_ACK: if (hcrx->ccid3hcrx_state == TFRC_RSTATE_NO_DATA) return; - case DCCP_PKT_DATAACK: { - struct timeval now; - + case DCCP_PKT_DATAACK: if (opt_recv->dccpor_timestamp_echo == 0) break; rtt_prev = hcrx->ccid3hcrx_rtt; - dccp_timestamp(sk, &now); - r_sample = dccp_sample_rtt(sk, &now, NULL); + now = ktime_get_real(); + r_sample = dccp_sample_rtt(sk, now, NULL); if (hcrx->ccid3hcrx_state == TFRC_RSTATE_NO_DATA) hcrx->ccid3hcrx_rtt = r_sample; @@ -911,7 +910,6 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb) dccp_role(sk), sk, hcrx->ccid3hcrx_rtt, opt_recv->dccpor_elapsed_time); break; - } case DCCP_PKT_DATA: break; default: /* We're not interested in other packet types, move along */ @@ -942,9 +940,7 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb) ccid3_hc_rx_send_feedback(sk); ccid3_hc_rx_set_state(sk, TFRC_RSTATE_DATA); return; - case TFRC_RSTATE_DATA: { - ktime_t now; - + case TFRC_RSTATE_DATA: hcrx->ccid3hcrx_bytes_recv += payload_size; if (loss) break; @@ -956,7 +952,6 @@ static void ccid3_hc_rx_packet_recv(struct sock *sk, struct sk_buff *skb) ccid3_hc_rx_send_feedback(sk); } return; - } case TFRC_RSTATE_TERM: DCCP_BUG("%s(%p) - Illegal state TERM", dccp_role(sk), sk); return; diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h index e2d74cd7ee..20a7bedfe9 100644 --- a/net/dccp/dccp.h +++ b/net/dccp/dccp.h @@ -13,6 +13,7 @@ */ #include +#include #include #include #include @@ -296,8 +297,8 @@ extern int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, extern int dccp_send_reset(struct sock *sk, enum dccp_reset_codes code); extern void dccp_send_close(struct sock *sk, const int active); extern int dccp_invalid_packet(struct sk_buff *skb); -extern u32 dccp_sample_rtt(struct sock *sk, struct timeval *t_recv, - struct timeval *t_history); +extern u32 dccp_sample_rtt(struct sock *sk, ktime_t t_recv, + ktime_t *t_history); static inline int dccp_bad_service_code(const struct sock *sk, const __be32 service) diff --git a/net/dccp/input.c b/net/dccp/input.c index da6ec185ed..782cdb7292 100644 --- a/net/dccp/input.c +++ b/net/dccp/input.c @@ -301,12 +301,10 @@ static int dccp_rcv_request_sent_state_process(struct sock *sk, goto out_invalid_packet; /* Obtain RTT sample from SYN exchange (used by CCID 3) */ - if (dp->dccps_options_received.dccpor_timestamp_echo) { - struct timeval now; - - dccp_timestamp(sk, &now); - dp->dccps_syn_rtt = dccp_sample_rtt(sk, &now, NULL); - } + if (dp->dccps_options_received.dccpor_timestamp_echo) + dp->dccps_syn_rtt = dccp_sample_rtt(sk, + ktime_get_real(), + NULL); if (dccp_msk(sk)->dccpms_send_ack_vector && dccp_ackvec_add(dp->dccps_hc_rx_ackvec, sk, @@ -593,22 +591,21 @@ EXPORT_SYMBOL_GPL(dccp_rcv_state_process); * @t_recv: receive timestamp of packet with timestamp echo * @t_hist: packet history timestamp or NULL */ -u32 dccp_sample_rtt(struct sock *sk, struct timeval *t_recv, - struct timeval *t_hist) +u32 dccp_sample_rtt(struct sock *sk, ktime_t t_recv, ktime_t *t_hist) { struct dccp_sock *dp = dccp_sk(sk); struct dccp_options_received *or = &dp->dccps_options_received; - suseconds_t delta; + s64 delta; if (t_hist == NULL) { if (!or->dccpor_timestamp_echo) { DCCP_WARN("packet without timestamp echo\n"); return DCCP_SANE_RTT_MAX; } - timeval_sub_usecs(t_recv, or->dccpor_timestamp_echo * 10); - delta = timeval_usecs(t_recv); + ktime_sub_us(t_recv, or->dccpor_timestamp_echo * 10); + delta = ktime_to_us(t_recv); } else - delta = timeval_delta(t_recv, t_hist); + delta = ktime_us_delta(t_recv, *t_hist); delta -= or->dccpor_elapsed_time * 10; /* either set or 0 */ @@ -616,7 +613,7 @@ u32 dccp_sample_rtt(struct sock *sk, struct timeval *t_recv, DCCP_WARN("unusable RTT sample %ld, using min\n", (long)delta); return DCCP_SANE_RTT_MIN; } - if (unlikely(delta - (suseconds_t)DCCP_SANE_RTT_MAX > 0)) { + if (unlikely(delta - (s64)DCCP_SANE_RTT_MAX > 0)) { DCCP_WARN("RTT sample %ld too large, using max\n", (long)delta); return DCCP_SANE_RTT_MAX; }