diff options
Diffstat (limited to 'package/kernel/mac80211/patches/319-mac80211-avoid-extra-memcpy-in-A-MSDU-head-creation.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/319-mac80211-avoid-extra-memcpy-in-A-MSDU-head-creation.patch | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/package/kernel/mac80211/patches/319-mac80211-avoid-extra-memcpy-in-A-MSDU-head-creation.patch b/package/kernel/mac80211/patches/319-mac80211-avoid-extra-memcpy-in-A-MSDU-head-creation.patch index fb6bd30243..4668226530 100644 --- a/package/kernel/mac80211/patches/319-mac80211-avoid-extra-memcpy-in-A-MSDU-head-creation.patch +++ b/package/kernel/mac80211/patches/319-mac80211-avoid-extra-memcpy-in-A-MSDU-head-creation.patch @@ -34,22 +34,23 @@ Signed-off-by: Johannes Berg <johannes.berg@intel.com> - amsdu_hdr.h_proto = cpu_to_be16(subframe_len); - memcpy(amsdu_hdr.h_source, skb->data + fast_tx->sa_offs, ETH_ALEN); - memcpy(amsdu_hdr.h_dest, skb->data + fast_tx->da_offs, ETH_ALEN); +- +- data = skb_push(skb, sizeof(amsdu_hdr)); +- memmove(data, data + sizeof(amsdu_hdr), hdr_len); +- memcpy(data + hdr_len, &amsdu_hdr, sizeof(amsdu_hdr)); +- + data = skb_push(skb, sizeof(*amsdu_hdr)); + memmove(data, data + sizeof(*amsdu_hdr), hdr_len); -+ hdr = data; + hdr = data; + amsdu_hdr = data + hdr_len; + /* h_80211_src/dst is addr* field within hdr */ + h_80211_src = data + fast_tx->sa_offs; + h_80211_dst = data + fast_tx->da_offs; - -- data = skb_push(skb, sizeof(amsdu_hdr)); -- memmove(data, data + sizeof(amsdu_hdr), hdr_len); -- memcpy(data + hdr_len, &amsdu_hdr, sizeof(amsdu_hdr)); ++ + amsdu_hdr->h_proto = cpu_to_be16(subframe_len); + ether_addr_copy(amsdu_hdr->h_source, h_80211_src); + ether_addr_copy(amsdu_hdr->h_dest, h_80211_dst); - -- hdr = data; ++ qc = ieee80211_get_qos_ctl(hdr); *qc |= IEEE80211_QOS_CTL_A_MSDU_PRESENT; |