staging: r8712u: fix bug in r8712_recv_indicatepkt()
64bit arches have a buggy r8712u driver, let's fix it. skb->tail must be set properly or network stack behavior is undefined. Addresses https://bugzilla.redhat.com/show_bug.cgi?id=847525 Addresses https://bugzilla.kernel.org/show_bug.cgi?id=45071 Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Dave Jones <davej@redhat.com> Cc: stable <stable@vger.kernel.org> [2.6.37+] Acked-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -117,13 +117,8 @@ void r8712_recv_indicatepkt(struct _adapter *padapter,
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if (skb == NULL)
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goto _recv_indicatepkt_drop;
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skb->data = precv_frame->u.hdr.rx_data;
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#ifdef NET_SKBUFF_DATA_USES_OFFSET
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skb->tail = (sk_buff_data_t)(precv_frame->u.hdr.rx_tail -
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precv_frame->u.hdr.rx_head);
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#else
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skb->tail = (sk_buff_data_t)precv_frame->u.hdr.rx_tail;
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#endif
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skb->len = precv_frame->u.hdr.len;
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skb_set_tail_pointer(skb, skb->len);
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if ((pattrib->tcpchk_valid == 1) && (pattrib->tcp_chkrpt == 1))
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skb->ip_summed = CHECKSUM_UNNECESSARY;
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else
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