61 lines
1.2 KiB
C
61 lines
1.2 KiB
C
#include "conn.h"
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#include "cw.h"
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#include "dbg.h"
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int conn_send_msg(struct conn * conn, uint8_t *rawmsg)
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{
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uint8_t * ptr;
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int packetlen;
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int fragoffset,hlen,mtu;
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packetlen = cw_get_hdr_msg_total_len(rawmsg);
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cw_dbg_msg(DBG_MSG_OUT, conn,rawmsg, packetlen,(struct sockaddr*)&conn->addr);
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/* Zyxel doesn't count msg element length from
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behind seqnum */
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if (conn->capwap_mode == CW_MODE_ZYXEL){
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/* // XXX val-=3; */
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}
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ptr = rawmsg;
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fragoffset = 0;
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hlen = cw_get_hdr_hlen(rawmsg)*4;
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mtu = conn->mtu;
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while (packetlen>mtu){
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cw_set_hdr_flags(rawmsg,CAPWAP_FLAG_HDR_F,1);
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cw_put_dword(ptr+4, conn->fragid<<16 | fragoffset<<3 );
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cw_dbg_pkt(DBG_PKT_OUT,conn,ptr,mtu,(struct sockaddr*)&conn->addr);
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if (conn->write(conn,ptr,mtu)<0)
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return -1;
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/* // XXX Fragmentation stuff.. */
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ptr +=mtu-hlen;
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fragoffset+=(mtu-hlen)/8;
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packetlen-=mtu-hlen;
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}
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if (fragoffset)
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cw_set_hdr_flags(rawmsg,CAPWAP_FLAG_HDR_F | CAPWAP_FLAG_HDR_L,1);
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else
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cw_set_hdr_flags(rawmsg,CAPWAP_FLAG_HDR_F,0);
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cw_put_dword(ptr+4, conn->fragid<<16 | fragoffset<<3 );
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cw_dbg_pkt(DBG_PKT_OUT,conn,ptr,packetlen,(struct sockaddr*)&conn->addr);
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return conn->write(conn,ptr,packetlen-0);
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}
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