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[CCID]: Check if ccid is NULL in the hc_[tr]x_exit functions
For consistency with ccid_exit and to fix a bug when IP_DCCP_UNLOAD_HACK is enabled as the control sock is not associated to any CCID. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -110,14 +110,14 @@ static inline int ccid_hc_tx_init(struct ccid *ccid, struct sock *sk)
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static inline void ccid_hc_rx_exit(struct ccid *ccid, struct sock *sk)
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{
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if (ccid->ccid_hc_rx_exit != NULL &&
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if (ccid != NULL && ccid->ccid_hc_rx_exit != NULL &&
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dccp_sk(sk)->dccps_hc_rx_ccid_private != NULL)
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ccid->ccid_hc_rx_exit(sk);
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}
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static inline void ccid_hc_tx_exit(struct ccid *ccid, struct sock *sk)
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{
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if (ccid->ccid_hc_tx_exit != NULL &&
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if (ccid != NULL && ccid->ccid_hc_tx_exit != NULL &&
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dccp_sk(sk)->dccps_hc_tx_ccid_private != NULL)
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ccid->ccid_hc_tx_exit(sk);
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}
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