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| author | Thomas Pedersen <thomas@cozybit.com> | 2011-10-26 14:47:25 -0700 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2011-11-08 15:54:31 -0500 |
| commit | 3b69a9c5f264d62a0cf46ea61ed3da732c1f88c2 (patch) | |
| tree | d40bbdbe62b517696711344e6f56278ac420cdd1 /net/mac80211/mesh_plink.c | |
| parent | c63749d347afcb5c4790d1cbe27d9b66e585b9ff (diff) | |
| download | linux-3b69a9c5f264d62a0cf46ea61ed3da732c1f88c2.tar.gz linux-3b69a9c5f264d62a0cf46ea61ed3da732c1f88c2.tar.bz2 linux-3b69a9c5f264d62a0cf46ea61ed3da732c1f88c2.zip | |
mac80211: comment allocation of mesh frames
Remove most references to magic numbers, save a few bytes and hopefully
improve readability.
Signed-off-by: Thomas Pedersen <thomas@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/mesh_plink.c')
| -rw-r--r-- | net/mac80211/mesh_plink.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c index 7e57f5d07f66..351e48c9710c 100644 --- a/net/mac80211/mesh_plink.c +++ b/net/mac80211/mesh_plink.c @@ -153,23 +153,29 @@ static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, enum ieee80211_self_protected_actioncode action, u8 *da, __le16 llid, __le16 plid, __le16 reason) { struct ieee80211_local *local = sdata->local; - struct sk_buff *skb = dev_alloc_skb(local->hw.extra_tx_headroom + 400 + - sdata->u.mesh.ie_len); + struct sk_buff *skb; struct ieee80211_mgmt *mgmt; bool include_plid = false; - int ie_len = 4; u16 peering_proto = 0; - u8 *pos; - + u8 *pos, ie_len = 4; + int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) + + sizeof(mgmt->u.action.u.self_prot); + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + + hdr_len + + 2 + /* capability info */ + 2 + /* AID */ + 2 + 8 + /* supported rates */ + 2 + (IEEE80211_MAX_SUPP_RATES - 8) + + 2 + sdata->u.mesh.mesh_id_len + + 2 + sizeof(struct ieee80211_meshconf_ie) + + 2 + 8 + /* peering IE */ + sdata->u.mesh.ie_len); if (!skb) return -1; skb_reserve(skb, local->hw.extra_tx_headroom); - /* 25 is the size of the common mgmt part (24) plus the size of the - * common action part (1) - */ - mgmt = (struct ieee80211_mgmt *) - skb_put(skb, 25 + sizeof(mgmt->u.action.u.self_prot)); - memset(mgmt, 0, 25 + sizeof(mgmt->u.action.u.self_prot)); + mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len); + memset(mgmt, 0, hdr_len); mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION); memcpy(mgmt->da, da, ETH_ALEN); |