--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
+/*
+ * Copyright (C) 2024 Intel Corporation
+ */
+#include <net/gso.h>
+#include <linux/ieee80211.h>
+#include <net/gso.h>
+#include <net/ip.h>
+
+#include "iwl-drv.h"
+#include "iwl-utils.h"
+
+#ifdef CONFIG_INET
+int iwl_tx_tso_segment(struct sk_buff *skb, unsigned int num_subframes,
+ netdev_features_t netdev_flags,
+ struct sk_buff_head *mpdus_skbs)
+{
+ struct sk_buff *tmp, *next;
+ struct ieee80211_hdr *hdr = (void *)skb->data;
+ char cb[sizeof(skb->cb)];
+ u16 i = 0;
+ unsigned int tcp_payload_len;
+ unsigned int mss = skb_shinfo(skb)->gso_size;
+ bool ipv4 = (skb->protocol == htons(ETH_P_IP));
+ bool qos = ieee80211_is_data_qos(hdr->frame_control);
+ u16 ip_base_id = ipv4 ? ntohs(ip_hdr(skb)->id) : 0;
+
+ skb_shinfo(skb)->gso_size = num_subframes * mss;
+ memcpy(cb, skb->cb, sizeof(cb));
+
+ next = skb_gso_segment(skb, netdev_flags);
+ skb_shinfo(skb)->gso_size = mss;
+ skb_shinfo(skb)->gso_type = ipv4 ? SKB_GSO_TCPV4 : SKB_GSO_TCPV6;
+
+ if (IS_ERR(next) && PTR_ERR(next) == -ENOMEM)
+ return -ENOMEM;
+
+ if (WARN_ONCE(IS_ERR(next),
+ "skb_gso_segment error: %d\n", (int)PTR_ERR(next)))
+ return PTR_ERR(next);
+
+ if (next)
+ consume_skb(skb);
+
+ skb_list_walk_safe(next, tmp, next) {
+ memcpy(tmp->cb, cb, sizeof(tmp->cb));
+ /*
+ * Compute the length of all the data added for the A-MSDU.
+ * This will be used to compute the length to write in the TX
+ * command. We have: SNAP + IP + TCP for n -1 subframes and
+ * ETH header for n subframes.
+ */
+ tcp_payload_len = skb_tail_pointer(tmp) -
+ skb_transport_header(tmp) -
+ tcp_hdrlen(tmp) + tmp->data_len;
+
+ if (ipv4)
+ ip_hdr(tmp)->id = htons(ip_base_id + i * num_subframes);
+
+ if (tcp_payload_len > mss) {
+ skb_shinfo(tmp)->gso_size = mss;
+ skb_shinfo(tmp)->gso_type = ipv4 ? SKB_GSO_TCPV4 :
+ SKB_GSO_TCPV6;
+ } else {
+ if (qos) {
+ u8 *qc;
+
+ if (ipv4)
+ ip_send_check(ip_hdr(tmp));
+
+ qc = ieee80211_get_qos_ctl((void *)tmp->data);
+ *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
+ }
+ skb_shinfo(tmp)->gso_size = 0;
+ }
+
+ skb_mark_not_on_list(tmp);
+ __skb_queue_tail(mpdus_skbs, tmp);
+ i++;
+ }
+
+ return 0;
+}
+IWL_EXPORT_SYMBOL(iwl_tx_tso_segment);
+#endif /* CONFIG_INET */
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
+/*
+ * Copyright (C) 2024 Intel Corporation
+ */
+#ifndef __iwl_utils_h__
+#define __iwl_utils_h__
+
+#ifdef CONFIG_INET
+/**
+ * iwl_tx_tso_segment - Segments a TSO packet into subframes for A-MSDU.
+ * @skb: buffer to segment.
+ * @num_subframes: number of subframes to create.
+ * @netdev_flags: netdev feature flags.
+ * @mpdus_skbs: list to hold the segmented subframes.
+ *
+ * This function segments a large TCP packet into subframes.
+ * subframes are added to the mpdus_skbs list
+ *
+ * Returns: 0 on success and negative value on failure.
+ */
+int iwl_tx_tso_segment(struct sk_buff *skb, unsigned int num_subframes,
+ netdev_features_t netdev_flags,
+ struct sk_buff_head *mpdus_skbs);
+#else
+static inline
+int iwl_tx_tso_segment(struct sk_buff *skb, unsigned int num_subframes,
+ netdev_features_t netdev_flags,
+ struct sk_buff_head *mpdus_skbs)
+{
+ WARN_ON(1);
+
+ return -1;
+}
+#endif /* CONFIG_INET */
+
+#endif /* __iwl_utils_h__ */
#include "iwl-trans.h"
#include "iwl-nvm-utils.h"
+#include "iwl-utils.h"
#include "mvm.h"
#include "sta.h"
#include "time-sync.h"
#ifdef CONFIG_INET
-static int
-iwl_mvm_tx_tso_segment(struct sk_buff *skb, unsigned int num_subframes,
- netdev_features_t netdev_flags,
- struct sk_buff_head *mpdus_skb)
-{
- struct sk_buff *tmp, *next;
- struct ieee80211_hdr *hdr = (void *)skb->data;
- char cb[sizeof(skb->cb)];
- u16 i = 0;
- unsigned int tcp_payload_len;
- unsigned int mss = skb_shinfo(skb)->gso_size;
- bool ipv4 = (skb->protocol == htons(ETH_P_IP));
- bool qos = ieee80211_is_data_qos(hdr->frame_control);
- u16 ip_base_id = ipv4 ? ntohs(ip_hdr(skb)->id) : 0;
-
- skb_shinfo(skb)->gso_size = num_subframes * mss;
- memcpy(cb, skb->cb, sizeof(cb));
-
- next = skb_gso_segment(skb, netdev_flags);
- skb_shinfo(skb)->gso_size = mss;
- skb_shinfo(skb)->gso_type = ipv4 ? SKB_GSO_TCPV4 : SKB_GSO_TCPV6;
-
- if (IS_ERR(next) && PTR_ERR(next) == -ENOMEM)
- return -ENOMEM;
-
- if (WARN_ONCE(IS_ERR(next),
- "skb_gso_segment error: %d\n", (int)PTR_ERR(next)))
- return PTR_ERR(next);
-
- if (next)
- consume_skb(skb);
-
- skb_list_walk_safe(next, tmp, next) {
- memcpy(tmp->cb, cb, sizeof(tmp->cb));
- /*
- * Compute the length of all the data added for the A-MSDU.
- * This will be used to compute the length to write in the TX
- * command. We have: SNAP + IP + TCP for n -1 subframes and
- * ETH header for n subframes.
- */
- tcp_payload_len = skb_tail_pointer(tmp) -
- skb_transport_header(tmp) -
- tcp_hdrlen(tmp) + tmp->data_len;
-
- if (ipv4)
- ip_hdr(tmp)->id = htons(ip_base_id + i * num_subframes);
-
- if (tcp_payload_len > mss) {
- skb_shinfo(tmp)->gso_size = mss;
- skb_shinfo(tmp)->gso_type = ipv4 ? SKB_GSO_TCPV4 :
- SKB_GSO_TCPV6;
- } else {
- if (qos) {
- u8 *qc;
-
- if (ipv4)
- ip_send_check(ip_hdr(tmp));
-
- qc = ieee80211_get_qos_ctl((void *)tmp->data);
- *qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
- }
- skb_shinfo(tmp)->gso_size = 0;
- }
-
- skb_mark_not_on_list(tmp);
- __skb_queue_tail(mpdus_skb, tmp);
- i++;
- }
-
- return 0;
-}
-
static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb,
struct ieee80211_tx_info *info,
struct ieee80211_sta *sta,
if (!mvmsta->max_amsdu_len ||
!ieee80211_is_data_qos(hdr->frame_control) ||
!mvmsta->amsdu_enabled)
- return iwl_mvm_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb);
+ return iwl_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb);
/*
* Do not build AMSDU for IPv6 with extension headers.
((struct ipv6hdr *)skb_network_header(skb))->nexthdr !=
IPPROTO_TCP) {
netdev_flags &= ~NETIF_F_CSUM_MASK;
- return iwl_mvm_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb);
+ return iwl_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb);
}
tid = ieee80211_get_tid(hdr);
if ((info->flags & IEEE80211_TX_CTL_AMPDU &&
!mvmsta->tid_data[tid].amsdu_in_ampdu_allowed) ||
!(mvmsta->amsdu_enabled & BIT(tid)))
- return iwl_mvm_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb);
+ return iwl_tx_tso_segment(skb, 1, netdev_flags, mpdus_skb);
/*
* Take the min of ieee80211 station and mvm station
* Trick the segmentation function to make it
* create SKBs that can fit into one A-MSDU.
*/
- return iwl_mvm_tx_tso_segment(skb, num_subframes, netdev_flags,
- mpdus_skb);
+ return iwl_tx_tso_segment(skb, num_subframes, netdev_flags, mpdus_skb);
}
#else /* CONFIG_INET */
static int iwl_mvm_tx_tso(struct iwl_mvm *mvm, struct sk_buff *skb,
projects / linux-2.6-microblaze.git / commitdiff