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| author | Jesper Dangaard Brouer <hawk@comx.dk> | 2007-09-12 16:35:24 +0200 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-10-10 16:49:20 -0700 |
| commit | e9bef55d3d062ee7a78fde2913ec87ca9305a1e0 (patch) | |
| tree | bb772650e7df49e94bd9c383b51f53bbb4e7bcab | |
| parent | b6fa1a4d746488a7de95ec16afcaf3247fedb003 (diff) | |
| download | op-kernel-dev-e9bef55d3d062ee7a78fde2913ec87ca9305a1e0.zip op-kernel-dev-e9bef55d3d062ee7a78fde2913ec87ca9305a1e0.tar.gz | |
[NET_SCHED]: Cleanup L2T macros and handle oversized packets
Change L2T (length to time) macros, in all rate based schedulers, to
call a common function qdisc_l2t() that does the rate table lookup.
This function handles if the packet size lookup is larger than the
rate table, which often occurs with TSO enabled.
Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/net/sch_generic.h | 12 | ||||
| -rw-r--r-- | net/sched/act_police.c | 4 | ||||
| -rw-r--r-- | net/sched/sch_cbq.c | 2 | ||||
| -rw-r--r-- | net/sched/sch_htb.c | 6 | ||||
| -rw-r--r-- | net/sched/sch_tbf.c | 4 |
5 files changed, 19 insertions, 9 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index 8a67f24..4ebd615 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -302,4 +302,16 @@ drop: return NET_XMIT_DROP; } +/* Length to Time (L2T) lookup in a qdisc_rate_table, to determine how + long it will take to send a packet given its size. + */ +static inline u32 qdisc_l2t(struct qdisc_rate_table* rtab, unsigned int pktlen) +{ + int slot = pktlen; + slot >>= rtab->rate.cell_log; + if (slot > 255) + return (rtab->data[255]*(slot >> 8) + rtab->data[slot & 0xFF]); + return rtab->data[slot]; +} + #endif diff --git a/net/sched/act_police.c b/net/sched/act_police.c index 17f6f27..a73e3e6d 100644 --- a/net/sched/act_police.c +++ b/net/sched/act_police.c @@ -21,8 +21,8 @@ #include <net/act_api.h> #include <net/netlink.h> -#define L2T(p,L) ((p)->tcfp_R_tab->data[(L)>>(p)->tcfp_R_tab->rate.cell_log]) -#define L2T_P(p,L) ((p)->tcfp_P_tab->data[(L)>>(p)->tcfp_P_tab->rate.cell_log]) +#define L2T(p,L) qdisc_l2t((p)->tcfp_R_tab, L) +#define L2T_P(p,L) qdisc_l2t((p)->tcfp_P_tab, L) #define POL_TAB_MASK 15 static struct tcf_common *tcf_police_ht[POL_TAB_MASK + 1]; diff --git a/net/sched/sch_cbq.c b/net/sched/sch_cbq.c index cbef3bb..4de3744 100644 --- a/net/sched/sch_cbq.c +++ b/net/sched/sch_cbq.c @@ -175,7 +175,7 @@ struct cbq_sched_data }; -#define L2T(cl,len) ((cl)->R_tab->data[(len)>>(cl)->R_tab->rate.cell_log]) +#define L2T(cl,len) qdisc_l2t((cl)->R_tab,len) static __inline__ unsigned cbq_hash(u32 h) diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c index 246a2f9..5e608a6 100644 --- a/net/sched/sch_htb.c +++ b/net/sched/sch_htb.c @@ -132,10 +132,8 @@ struct htb_class { static inline long L2T(struct htb_class *cl, struct qdisc_rate_table *rate, int size) { - int slot = size >> rate->rate.cell_log; - if (slot > 255) - return (rate->data[255]*(slot >> 8) + rate->data[slot & 0xFF]); - return rate->data[slot]; + long result = qdisc_l2t(rate, size); + return result; } struct htb_sched { diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c index 8c2639a..b0d8109 100644 --- a/net/sched/sch_tbf.c +++ b/net/sched/sch_tbf.c @@ -115,8 +115,8 @@ struct tbf_sched_data struct qdisc_watchdog watchdog; /* Watchdog timer */ }; -#define L2T(q,L) ((q)->R_tab->data[(L)>>(q)->R_tab->rate.cell_log]) -#define L2T_P(q,L) ((q)->P_tab->data[(L)>>(q)->P_tab->rate.cell_log]) +#define L2T(q,L) qdisc_l2t((q)->R_tab,L) +#define L2T_P(q,L) qdisc_l2t((q)->P_tab,L) static int tbf_enqueue(struct sk_buff *skb, struct Qdisc* sch) { |
