26 lines
494 B
C
26 lines
494 B
C
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#include <netinet/in.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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int sock_set_dontfrag(int sock,int val)
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{
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#if defined IP_MTU_DISCOVER && defined IP_PMTUDISC_DONT
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int mtu_type;
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if (val)
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mtu_type = IP_PMTUDISC_DO;
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else
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mtu_type = IP_PMTUDISC_WANT;
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return setsockopt(sock, SOL_IP, IP_MTU_DISCOVER, &mtu_type, sizeof (mtu_type));
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#elif defined IP_DONTFRAG
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const int opt = val;
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return setsockopt(sock, IPPROTO_IP, IP_DONTFRAG, &opt, sizeof (opt));
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#endif
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}
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