diff options
| author | James Ketrenos <jketreno@linux.intel.com> | 2005-09-21 11:53:54 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-09-21 23:01:52 -0400 |
| commit | f1bf6638af9e9bbbb6fb0b769054fb7db1ae652f (patch) | |
| tree | 5cf2dca63f88c1709ae8ee9d913c7f819bfc6ce8 /net/ieee80211/ieee80211_tx.c | |
| parent | 20d64713ae71c0b0aa06084acbef2244021baaca (diff) | |
[PATCH] ieee80211: Hardware crypto and fragmentation offload support
tree 5322d496af90d03ffbec27292dc1a6268a746ede
parent 6c9364386ccb786e4a84427ab3ad712f0b7b8904
author James Ketrenos <jketreno@linux.intel.com> 1124432367 -0500
committer James Ketrenos <jketreno@linux.intel.com> 1127311810 -0500
Hardware crypto and fragmentation offload support added (Zhu Yi)
Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'net/ieee80211/ieee80211_tx.c')
| -rw-r--r-- | net/ieee80211/ieee80211_tx.c | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/net/ieee80211/ieee80211_tx.c b/net/ieee80211/ieee80211_tx.c index 435ef5a73d7..785e76f7e4e 100644 --- a/net/ieee80211/ieee80211_tx.c +++ b/net/ieee80211/ieee80211_tx.c @@ -231,7 +231,7 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) int i, bytes_per_frag, nr_frags, bytes_last_frag, frag_size; unsigned long flags; struct net_device_stats *stats = &ieee->stats; - int ether_type, encrypt; + int ether_type, encrypt, host_encrypt; int bytes, fc, hdr_len; struct sk_buff *skb_frag; struct ieee80211_hdr header = { /* Ensure zero initialized */ @@ -262,7 +262,8 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) crypt = ieee->crypt[ieee->tx_keyidx]; encrypt = !(ether_type == ETH_P_PAE && ieee->ieee802_1x) && - ieee->host_encrypt && crypt && crypt->ops; + ieee->sec.encrypt; + host_encrypt = ieee->host_encrypt && encrypt; if (!encrypt && ieee->ieee802_1x && ieee->drop_unencrypted && ether_type != ETH_P_PAE) { @@ -280,7 +281,7 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) /* Determine total amount of storage required for TXB packets */ bytes = skb->len + SNAP_SIZE + sizeof(u16); - if (encrypt) + if (host_encrypt) fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA | IEEE80211_FCTL_PROTECTED; else @@ -320,7 +321,7 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) bytes_per_frag -= IEEE80211_FCS_LEN; /* Each fragment may need to have room for encryptiong pre/postfix */ - if (encrypt) + if (host_encrypt) bytes_per_frag -= crypt->ops->extra_prefix_len + crypt->ops->extra_postfix_len; @@ -348,7 +349,7 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) for (i = 0; i < nr_frags; i++) { skb_frag = txb->fragments[i]; - if (encrypt) + if (host_encrypt) skb_reserve(skb_frag, crypt->ops->extra_prefix_len); frag_hdr = (struct ieee80211_hdr *)skb_put(skb_frag, hdr_len); @@ -380,8 +381,22 @@ int ieee80211_xmit(struct sk_buff *skb, struct net_device *dev) /* Encryption routine will move the header forward in order * to insert the IV between the header and the payload */ - if (encrypt) + if (host_encrypt) ieee80211_encrypt_fragment(ieee, skb_frag, hdr_len); + + /* ipw2200/2915 Hardware encryption doesn't support TKIP MIC */ + if (!ieee->host_encrypt && encrypt && + (ieee->sec.level == SEC_LEVEL_2) && + crypt && crypt->ops && crypt->ops->encrypt_msdu) { + int res = 0; + res = crypt->ops->encrypt_msdu(skb_frag, hdr_len, + crypt->priv); + if (res < 0) { + IEEE80211_ERROR("TKIP MIC encryption failed\n"); + goto failed; + } + } + if (ieee->config & (CFG_IEEE80211_COMPUTE_FCS | CFG_IEEE80211_RESERVE_FCS)) skb_put(skb_frag, 4); |