diff options
Diffstat (limited to 'package/madwifi/patches-testing/309-performance.patch')
| -rw-r--r-- | package/madwifi/patches-testing/309-performance.patch | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/package/madwifi/patches-testing/309-performance.patch b/package/madwifi/patches-testing/309-performance.patch new file mode 100644 index 0000000000..ec22085258 --- /dev/null +++ b/package/madwifi/patches-testing/309-performance.patch @@ -0,0 +1,215 @@ +--- a/ath/if_ath.c ++++ b/ath/if_ath.c +@@ -3334,7 +3334,6 @@ + struct ath_softc *sc = dev->priv; + struct ieee80211_node *ni = NULL; + struct ath_buf *bf = NULL; +- struct ether_header *eh; + ath_bufhead bf_head; + struct ath_buf *tbf; + struct sk_buff *tskb; +@@ -3349,6 +3348,7 @@ + */ + int requeue = 0; + #ifdef ATH_SUPERG_FF ++ struct ether_header *eh; + unsigned int pktlen; + struct ieee80211com *ic = &sc->sc_ic; + struct ath_txq *txq = NULL; +--- a/net80211/ieee80211_output.c ++++ b/net80211/ieee80211_output.c +@@ -280,7 +280,7 @@ + * normal vap. */ + if (vap->iv_xrvap && (ni == vap->iv_bss) && + vap->iv_xrvap->iv_sta_assoc) { +- struct sk_buff *skb1 = skb_copy(skb, GFP_ATOMIC); ++ struct sk_buff *skb1 = skb_clone(skb, GFP_ATOMIC); + if (skb1) { + memset(SKB_CB(skb1), 0, sizeof(struct ieee80211_cb)); + #ifdef IEEE80211_DEBUG_REFCNT +@@ -561,7 +561,7 @@ + struct ieee80211_key *key, struct sk_buff *skb, int ismulticast) + { + /* XXX pre-calculate per node? */ +- int need_headroom = LLC_SNAPFRAMELEN + hdrsize + IEEE80211_ADDR_LEN; ++ int need_headroom = LLC_SNAPFRAMELEN + hdrsize; + int need_tailroom = 0; + #ifdef ATH_SUPERG_FF + int isff = ATH_FF_MAGIC_PRESENT(skb); +@@ -603,109 +603,56 @@ + need_tailroom += cip->ic_miclen; + } + +- if (skb_shared(skb)) { +- /* Take our own reference to the node in the clone */ +- ieee80211_ref_node(SKB_NI(skb)); +- /* Unshare the node, decrementing users in the old skb */ +- skb = skb_unshare(skb, GFP_ATOMIC); ++ need_headroom -= skb_headroom(skb); ++ if (isff) ++ need_tailroom -= skb_tailroom(skb2); ++ else ++ need_tailroom -= skb_tailroom(skb); ++ ++ if (need_headroom < 0) ++ need_headroom = 0; ++ if (need_tailroom < 0) ++ need_tailroom = 0; ++ ++ if (skb_cloned(skb) || (need_headroom > 0) || ++ (!isff && (need_tailroom > 0))) { ++ ++ if (pskb_expand_head(skb, need_headroom, need_tailroom, GFP_ATOMIC)) { ++ IEEE80211_DPRINTF(vap, IEEE80211_MSG_OUTPUT, ++ "%s: cannot expand storage (tail)\n", __func__); ++ goto error; ++ } + } + + #ifdef ATH_SUPERG_FF + if (isff) { +- if (skb == NULL) { +- IEEE80211_DPRINTF(vap, IEEE80211_MSG_OUTPUT, +- "%s: cannot unshare for encapsulation\n", +- __func__); +- vap->iv_stats.is_tx_nobuf++; +- ieee80211_dev_kfree_skb(&skb2); +- +- return NULL; +- } ++ inter_headroom -= skb_headroom(skb2); ++ if (inter_headroom < 0) ++ inter_headroom = 0; ++ if ((skb_cloned(skb2) || ++ (inter_headroom > 0) || (need_tailroom > 0))) { + +- /* first skb header */ +- if (skb_headroom(skb) < need_headroom) { +- struct sk_buff *tmp = skb; +- skb = skb_realloc_headroom(skb, need_headroom); +- if (skb == NULL) { ++ if (pskb_expand_head(skb2, inter_headroom, ++ need_tailroom, GFP_ATOMIC)) { + IEEE80211_DPRINTF(vap, IEEE80211_MSG_OUTPUT, +- "%s: cannot expand storage (head1)\n", +- __func__); +- vap->iv_stats.is_tx_nobuf++; +- ieee80211_dev_kfree_skb(&skb2); +- return NULL; +- } else +- ieee80211_skb_copy_noderef(tmp, skb); +- ieee80211_dev_kfree_skb(&tmp); +- /* NB: cb[] area was copied, but not next ptr. must do that +- * prior to return on success. */ +- } +- +- /* second skb with header and tail adjustments possible */ +- if (skb_tailroom(skb2) < need_tailroom) { +- int n = 0; +- if (inter_headroom > skb_headroom(skb2)) +- n = inter_headroom - skb_headroom(skb2); +- if (pskb_expand_head(skb2, n, +- need_tailroom - skb_tailroom(skb2), GFP_ATOMIC)) { +- ieee80211_dev_kfree_skb(&skb2); +- IEEE80211_DPRINTF(vap, IEEE80211_MSG_OUTPUT, +- "%s: cannot expand storage (tail2)\n", +- __func__); +- vap->iv_stats.is_tx_nobuf++; +- /* this shouldn't happen, but don't send first ff either */ +- ieee80211_dev_kfree_skb(&skb); ++ "%s: cannot expand storage (tail)\n", __func__); ++ goto error; + } +- } else if (skb_headroom(skb2) < inter_headroom) { +- struct sk_buff *tmp = skb2; +- +- skb2 = skb_realloc_headroom(skb2, inter_headroom); +- if (skb2 == NULL) { +- IEEE80211_DPRINTF(vap, IEEE80211_MSG_OUTPUT, +- "%s: cannot expand storage (head2)\n", +- __func__); +- vap->iv_stats.is_tx_nobuf++; +- /* this shouldn't happen, but don't send first ff either */ +- ieee80211_dev_kfree_skb(&skb); +- skb = NULL; +- } else +- ieee80211_skb_copy_noderef(tmp, skb); +- ieee80211_dev_kfree_skb(&tmp); + } +- if (skb) { +- skb->next = skb2; +- } +- return skb; ++ skb->next = skb2; + } + #endif /* ATH_SUPERG_FF */ +- if (skb == NULL) { +- IEEE80211_DPRINTF(vap, IEEE80211_MSG_OUTPUT, +- "%s: cannot unshare for encapsulation\n", __func__); +- vap->iv_stats.is_tx_nobuf++; +- } else if (skb_tailroom(skb) < need_tailroom) { +- int n = 0; +- if (need_headroom > skb_headroom(skb)) +- n = need_headroom - skb_headroom(skb); +- if (pskb_expand_head(skb, n, need_tailroom - +- skb_tailroom(skb), GFP_ATOMIC)) { +- IEEE80211_DPRINTF(vap, IEEE80211_MSG_OUTPUT, +- "%s: cannot expand storage (tail)\n", __func__); +- vap->iv_stats.is_tx_nobuf++; +- ieee80211_dev_kfree_skb(&skb); +- } +- } else if (skb_headroom(skb) < need_headroom) { +- struct sk_buff *tmp = skb; +- skb = skb_realloc_headroom(skb, need_headroom); +- /* Increment reference count after copy */ +- if (skb == NULL) { +- IEEE80211_DPRINTF(vap, IEEE80211_MSG_OUTPUT, +- "%s: cannot expand storage (head)\n", __func__); +- vap->iv_stats.is_tx_nobuf++; +- } else +- ieee80211_skb_copy_noderef(tmp, skb); +- ieee80211_dev_kfree_skb(&tmp); +- } + + return skb; ++ ++error: ++ vap->iv_stats.is_tx_nobuf++; ++ ieee80211_dev_kfree_skb(&skb); ++#ifdef ATH_SUPERG_FF ++ if (skb2) ++ ieee80211_dev_kfree_skb(&skb2); ++#endif ++ return NULL; + } + + #define KEY_UNDEFINED(k) ((k).wk_cipher == &ieee80211_cipher_none) +--- a/net80211/ieee80211_input.c ++++ b/net80211/ieee80211_input.c +@@ -713,7 +713,7 @@ + /* ether_type must be length as FF frames are always LLC/SNAP encap'd */ + frame_len = ntohs(eh_tmp->ether_type); + +- skb1 = skb_copy(skb, GFP_ATOMIC); ++ skb1 = skb_clone(skb, GFP_ATOMIC); + if (skb1 == NULL) + goto err; + ieee80211_skb_copy_noderef(skb, skb1); +@@ -1118,7 +1118,7 @@ + + if (ETHER_IS_MULTICAST(eh->ether_dhost) && !netif_queue_stopped(dev)) { + /* Create a SKB for the BSS to send out. */ +- skb1 = skb_copy(skb, GFP_ATOMIC); ++ skb1 = skb_clone(skb, GFP_ATOMIC); + if (skb1) + SKB_NI(skb1) = ieee80211_ref_node(vap->iv_bss); + } +@@ -2265,7 +2265,7 @@ + if (filter_type && ((vap->app_filter & filter_type) == filter_type)) { + struct sk_buff *skb1; + +- skb1 = skb_copy(skb, GFP_ATOMIC); ++ skb1 = skb_clone(skb, GFP_ATOMIC); + if (skb1 == NULL) + return; + /* We duplicate the reference after skb_copy */ |