taglinefilesource code
n_sm882net/ipv4/ip_fw.cunsigned long n_sa,n_da,o_sa,o_da,o_sm,o_dm,n_sm,n_dm;
n_sm936net/ipv4/ip_fw.cn_sm=ntohl(ftmp->fw_smsk.s_addr);
n_sm944net/ipv4/ip_fw.cm_src_mask = o_sm & n_sm;
n_sm949net/ipv4/ip_fw.cif (n_sm > o_sm) 
n_sm951net/ipv4/ip_fw.cif (n_sm < o_sm) 
n_sm964net/ipv4/ip_fw.c&&((o_sa & o_sm) == (n_sa & n_sm)))