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9991739ed3
The header files net/gso.h is included twice in iwl-utils.c, so one inclusion of each can be removed. Reported-by: Abaci Robot <abaci@linux.alibaba.com> Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=13555 Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Acked-by: Miri Korenblit <miriam.rachel.korenblit@intel.com> Link: https://patch.msgid.link/20250115005431.89510-1-yang.lee@linux.alibaba.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
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/*
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* Copyright (C) 2024 Intel Corporation
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*/
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#include <net/gso.h>
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#include <linux/ieee80211.h>
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#include <net/ip.h>
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#include "iwl-drv.h"
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#include "iwl-utils.h"
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#ifdef CONFIG_INET
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int iwl_tx_tso_segment(struct sk_buff *skb, unsigned int num_subframes,
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netdev_features_t netdev_flags,
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struct sk_buff_head *mpdus_skbs)
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{
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struct sk_buff *tmp, *next;
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struct ieee80211_hdr *hdr = (void *)skb->data;
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char cb[sizeof(skb->cb)];
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u16 i = 0;
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unsigned int tcp_payload_len;
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unsigned int mss = skb_shinfo(skb)->gso_size;
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bool ipv4 = (skb->protocol == htons(ETH_P_IP));
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bool qos = ieee80211_is_data_qos(hdr->frame_control);
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u16 ip_base_id = ipv4 ? ntohs(ip_hdr(skb)->id) : 0;
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skb_shinfo(skb)->gso_size = num_subframes * mss;
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memcpy(cb, skb->cb, sizeof(cb));
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next = skb_gso_segment(skb, netdev_flags);
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skb_shinfo(skb)->gso_size = mss;
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skb_shinfo(skb)->gso_type = ipv4 ? SKB_GSO_TCPV4 : SKB_GSO_TCPV6;
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if (IS_ERR(next) && PTR_ERR(next) == -ENOMEM)
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return -ENOMEM;
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if (WARN_ONCE(IS_ERR(next),
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"skb_gso_segment error: %d\n", (int)PTR_ERR(next)))
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return PTR_ERR(next);
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if (next)
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consume_skb(skb);
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skb_list_walk_safe(next, tmp, next) {
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memcpy(tmp->cb, cb, sizeof(tmp->cb));
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/*
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* Compute the length of all the data added for the A-MSDU.
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* This will be used to compute the length to write in the TX
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* command. We have: SNAP + IP + TCP for n -1 subframes and
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* ETH header for n subframes.
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*/
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tcp_payload_len = skb_tail_pointer(tmp) -
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skb_transport_header(tmp) -
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tcp_hdrlen(tmp) + tmp->data_len;
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if (ipv4)
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ip_hdr(tmp)->id = htons(ip_base_id + i * num_subframes);
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if (tcp_payload_len > mss) {
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skb_shinfo(tmp)->gso_size = mss;
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skb_shinfo(tmp)->gso_type = ipv4 ? SKB_GSO_TCPV4 :
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SKB_GSO_TCPV6;
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} else {
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if (qos) {
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u8 *qc;
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if (ipv4)
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ip_send_check(ip_hdr(tmp));
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qc = ieee80211_get_qos_ctl((void *)tmp->data);
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*qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
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}
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skb_shinfo(tmp)->gso_size = 0;
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}
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skb_mark_not_on_list(tmp);
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__skb_queue_tail(mpdus_skbs, tmp);
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i++;
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}
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return 0;
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}
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IWL_EXPORT_SYMBOL(iwl_tx_tso_segment);
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#endif /* CONFIG_INET */
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