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authorYuval Mintz <Yuval.Mintz@qlogic.com>2015-08-17 08:28:25 +0300
committerDavid S. Miller <davem@davemloft.net>2015-08-17 20:27:57 +0300
commitda3cc2da7c08dc1f4371a4cc2eb83b22a0cf83a8 (patch)
tree159f5e9565c5078b331bc46600161fcc00ffaa6e /drivers/net/ethernet
parent1e3136789975f03e461798149309034e5213c1b4 (diff)
downloadlinux-da3cc2da7c08dc1f4371a4cc2eb83b22a0cf83a8.tar.xz
bnx2: Fix bandwidth allocation for some MF modes
Management firmware tells driver in case bandwidth configuration for a specific function exists, but [regretably] the same field has different meanings depending on the multi-function mode - it can either be a percentile value or an actual speed. For newer multi-function modes current logic is incorrect - driver understands values as actual speeds instead of percentages, causing the resulting chip configuration to be incorrect. Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
-rw-r--r--drivers/net/ethernet/broadcom/bnx2x/bnx2x.h4
-rw-r--r--drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c2
-rw-r--r--drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c2
3 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
index 5762c485ea06..e28c90c15e0b 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
@@ -2571,6 +2571,10 @@ void bnx2x_notify_link_changed(struct bnx2x *bp);
(IS_MF_SD_STORAGE_PERSONALITY_ONLY(bp) || \
IS_MF_SI_STORAGE_PERSONALITY_ONLY(bp))
+/* Determines whether BW configuration arrives in 100Mb units or in
+ * percentages from actual physical link speed.
+ */
+#define IS_MF_PERCENT_BW(bp) (IS_MF_SI(bp) || IS_MF_UFP(bp) || IS_MF_BD(bp))
#define SET_FLAG(value, mask, flag) \
do {\
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index a2bb1f0934d5..44173be5cbf0 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -1190,7 +1190,7 @@ u16 bnx2x_get_mf_speed(struct bnx2x *bp)
/* Calculate the current MAX line speed limit for the MF
* devices
*/
- if (IS_MF_SI(bp))
+ if (IS_MF_PERCENT_BW(bp))
line_speed = (line_speed * maxCfg) / 100;
else { /* SD mode */
u16 vn_max_rate = maxCfg * 100;
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index ad73a60de333..eafd25d8142a 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -2494,7 +2494,7 @@ static void bnx2x_calc_vn_max(struct bnx2x *bp, int vn,
else {
u32 maxCfg = bnx2x_extract_max_cfg(bp, vn_cfg);
- if (IS_MF_SI(bp)) {
+ if (IS_MF_PERCENT_BW(bp)) {
/* maxCfg in percents of linkspeed */
vn_max_rate = (bp->link_vars.line_speed * maxCfg) / 100;
} else /* SD modes */