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Groups > linux.kernel > #1416517 > unrolled thread
| Started by | Rafał Miłecki <zajec5@gmail.com> |
|---|---|
| First post | 2016-06-07 21:20 +0200 |
| Last post | 2016-06-09 21:00 +0200 |
| Articles | 2 — 2 participants |
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[PATCH] brcmfmac: slightly simplify building interface combinations Rafał Miłecki <zajec5@gmail.com> - 2016-06-07 21:20 +0200
Re: [PATCH] brcmfmac: slightly simplify building interface combinations Arend van Spriel <arend.vanspriel@broadcom.com> - 2016-06-09 21:00 +0200
| From | Rafał Miłecki <zajec5@gmail.com> |
|---|---|
| Date | 2016-06-07 21:20 +0200 |
| Subject | [PATCH] brcmfmac: slightly simplify building interface combinations |
| Message-ID | <rHuHE-6FD-9@gated-at.bofh.it> |
This change reorders some operations in brcmf_setup_ifmodes in hope to
make it simpler:
1) It allocates arrays right before filling them. This way it's easier
to follow requested array length as it's immediately followed by
code filling it. It's easier to check e.g. why we need 4 entries for
P2P. Other than that it deduplicates some checks (e.g. for P2P).
2) It reorders code to first prepare limits and then define a new combo.
Previously this was mixed (e.g. we were setting num of channels
before preparing limits).
3) It modifies mbss code to use i variable just like other combos do.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
---
.../broadcom/brcm80211/brcmfmac/cfg80211.c | 37 ++++++++++------------
1 file changed, 16 insertions(+), 21 deletions(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index 4894eb7..33e682e 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -6300,29 +6300,15 @@ static int brcmf_setup_ifmodes(struct wiphy *wiphy, struct brcmf_if *ifp)
if (!combo)
goto err;
- c0_limits = kcalloc(p2p ? 3 : 2, sizeof(*c0_limits), GFP_KERNEL);
- if (!c0_limits)
- goto err;
-
- if (p2p) {
- p2p_limits = kcalloc(4, sizeof(*p2p_limits), GFP_KERNEL);
- if (!p2p_limits)
- goto err;
- }
-
- if (mbss) {
- mbss_limits = kcalloc(1, sizeof(*mbss_limits), GFP_KERNEL);
- if (!mbss_limits)
- goto err;
- }
-
wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_ADHOC) |
BIT(NL80211_IFTYPE_AP);
c = 0;
i = 0;
- combo[c].num_different_channels = 1;
+ c0_limits = kcalloc(p2p ? 3 : 2, sizeof(*c0_limits), GFP_KERNEL);
+ if (!c0_limits)
+ goto err;
c0_limits[i].max = 1;
c0_limits[i++].types = BIT(NL80211_IFTYPE_STATION);
if (p2p) {
@@ -6340,6 +6326,7 @@ static int brcmf_setup_ifmodes(struct wiphy *wiphy, struct brcmf_if *ifp)
c0_limits[i].max = 1;
c0_limits[i++].types = BIT(NL80211_IFTYPE_AP);
}
+ combo[c].num_different_channels = 1;
combo[c].max_interfaces = i;
combo[c].n_limits = i;
combo[c].limits = c0_limits;
@@ -6347,7 +6334,9 @@ static int brcmf_setup_ifmodes(struct wiphy *wiphy, struct brcmf_if *ifp)
if (p2p) {
c++;
i = 0;
- combo[c].num_different_channels = 1;
+ p2p_limits = kcalloc(4, sizeof(*p2p_limits), GFP_KERNEL);
+ if (!p2p_limits)
+ goto err;
p2p_limits[i].max = 1;
p2p_limits[i++].types = BIT(NL80211_IFTYPE_STATION);
p2p_limits[i].max = 1;
@@ -6356,6 +6345,7 @@ static int brcmf_setup_ifmodes(struct wiphy *wiphy, struct brcmf_if *ifp)
p2p_limits[i++].types = BIT(NL80211_IFTYPE_P2P_CLIENT);
p2p_limits[i].max = 1;
p2p_limits[i++].types = BIT(NL80211_IFTYPE_P2P_DEVICE);
+ combo[c].num_different_channels = 1;
combo[c].max_interfaces = i;
combo[c].n_limits = i;
combo[c].limits = p2p_limits;
@@ -6363,14 +6353,19 @@ static int brcmf_setup_ifmodes(struct wiphy *wiphy, struct brcmf_if *ifp)
if (mbss) {
c++;
+ i = 0;
+ mbss_limits = kcalloc(1, sizeof(*mbss_limits), GFP_KERNEL);
+ if (!mbss_limits)
+ goto err;
+ mbss_limits[i].max = 4;
+ mbss_limits[i++].types = BIT(NL80211_IFTYPE_AP);
combo[c].beacon_int_infra_match = true;
combo[c].num_different_channels = 1;
- mbss_limits[0].max = 4;
- mbss_limits[0].types = BIT(NL80211_IFTYPE_AP);
combo[c].max_interfaces = 4;
- combo[c].n_limits = 1;
+ combo[c].n_limits = i;
combo[c].limits = mbss_limits;
}
+
wiphy->n_iface_combinations = n_combos;
wiphy->iface_combinations = combo;
return 0;
--
1.8.4.5
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| From | Arend van Spriel <arend.vanspriel@broadcom.com> |
|---|---|
| Date | 2016-06-09 21:00 +0200 |
| Subject | Re: [PATCH] brcmfmac: slightly simplify building interface combinations |
| Message-ID | <rIdlo-1OU-19@gated-at.bofh.it> |
| In reply to | #1416517 |
On 07-06-16 21:10, Rafał Miłecki wrote:
> This change reorders some operations in brcmf_setup_ifmodes in hope to
> make it simpler:
> 1) It allocates arrays right before filling them. This way it's easier
> to follow requested array length as it's immediately followed by
> code filling it. It's easier to check e.g. why we need 4 entries for
> P2P. Other than that it deduplicates some checks (e.g. for P2P).
> 2) It reorders code to first prepare limits and then define a new combo.
> Previously this was mixed (e.g. we were setting num of channels
> before preparing limits).
> 3) It modifies mbss code to use i variable just like other combos do.
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
> Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
> ---
> .../broadcom/brcm80211/brcmfmac/cfg80211.c | 37 ++++++++++------------
> 1 file changed, 16 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> index 4894eb7..33e682e 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
> @@ -6300,29 +6300,15 @@ static int brcmf_setup_ifmodes(struct wiphy *wiphy, struct brcmf_if *ifp)
> if (!combo)
> goto err;
>
> - c0_limits = kcalloc(p2p ? 3 : 2, sizeof(*c0_limits), GFP_KERNEL);
> - if (!c0_limits)
> - goto err;
> -
> - if (p2p) {
> - p2p_limits = kcalloc(4, sizeof(*p2p_limits), GFP_KERNEL);
> - if (!p2p_limits)
> - goto err;
> - }
> -
> - if (mbss) {
> - mbss_limits = kcalloc(1, sizeof(*mbss_limits), GFP_KERNEL);
> - if (!mbss_limits)
> - goto err;
> - }
> -
> wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
> BIT(NL80211_IFTYPE_ADHOC) |
> BIT(NL80211_IFTYPE_AP);
>
> c = 0;
> i = 0;
> - combo[c].num_different_channels = 1;
> + c0_limits = kcalloc(p2p ? 3 : 2, sizeof(*c0_limits), GFP_KERNEL);
> + if (!c0_limits)
> + goto err;
> c0_limits[i].max = 1;
> c0_limits[i++].types = BIT(NL80211_IFTYPE_STATION);
> if (p2p) {
> @@ -6340,6 +6326,7 @@ static int brcmf_setup_ifmodes(struct wiphy *wiphy, struct brcmf_if *ifp)
> c0_limits[i].max = 1;
> c0_limits[i++].types = BIT(NL80211_IFTYPE_AP);
> }
> + combo[c].num_different_channels = 1;
> combo[c].max_interfaces = i;
> combo[c].n_limits = i;
> combo[c].limits = c0_limits;
> @@ -6347,7 +6334,9 @@ static int brcmf_setup_ifmodes(struct wiphy *wiphy, struct brcmf_if *ifp)
> if (p2p) {
> c++;
> i = 0;
> - combo[c].num_different_channels = 1;
> + p2p_limits = kcalloc(4, sizeof(*p2p_limits), GFP_KERNEL);
> + if (!p2p_limits)
> + goto err;
> p2p_limits[i].max = 1;
> p2p_limits[i++].types = BIT(NL80211_IFTYPE_STATION);
> p2p_limits[i].max = 1;
> @@ -6356,6 +6345,7 @@ static int brcmf_setup_ifmodes(struct wiphy *wiphy, struct brcmf_if *ifp)
> p2p_limits[i++].types = BIT(NL80211_IFTYPE_P2P_CLIENT);
> p2p_limits[i].max = 1;
> p2p_limits[i++].types = BIT(NL80211_IFTYPE_P2P_DEVICE);
> + combo[c].num_different_channels = 1;
> combo[c].max_interfaces = i;
> combo[c].n_limits = i;
> combo[c].limits = p2p_limits;
> @@ -6363,14 +6353,19 @@ static int brcmf_setup_ifmodes(struct wiphy *wiphy, struct brcmf_if *ifp)
>
> if (mbss) {
> c++;
> + i = 0;
> + mbss_limits = kcalloc(1, sizeof(*mbss_limits), GFP_KERNEL);
> + if (!mbss_limits)
> + goto err;
> + mbss_limits[i].max = 4;
> + mbss_limits[i++].types = BIT(NL80211_IFTYPE_AP);
> combo[c].beacon_int_infra_match = true;
> combo[c].num_different_channels = 1;
> - mbss_limits[0].max = 4;
> - mbss_limits[0].types = BIT(NL80211_IFTYPE_AP);
> combo[c].max_interfaces = 4;
> - combo[c].n_limits = 1;
> + combo[c].n_limits = i;
> combo[c].limits = mbss_limits;
> }
> +
> wiphy->n_iface_combinations = n_combos;
> wiphy->iface_combinations = combo;
> return 0;
>
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